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Scheenstra RJ, Muller SH, Vincent A, Hilgers FJM. Heat and moisture exchange capacity of the upper respiratory tract and the effect of tracheotomy breathing on endotracheal climate. Head Neck 2011; 33:117-24. [PMID: 20848429 DOI: 10.1002/hed.21408] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The aim of this study was to assess the heat and moisture exchange (HME) capacity of the upper respiratory tract and the effect of tracheotomy breathing on endotracheal climate in patients with head and neck cancer. METHODS We plotted the subglottic temperature and humidity measurements in 10 patients with head and neck cancer with a temporary precautionary tracheotomy during successive 10-minute periods of nose, mouth, and tracheotomy breathing in a randomized sequence. RESULTS End-inspiratory temperatures of nose, mouth, and tracheotomy breathing were 31.1, 31.3, and 28.3°C, respectively. End-inspiratory humidity measurements of nose, mouth, and tracheotomy breathing were 29.3, 28.6, and 21.1 mgH₂O/L, respectively. There was a trend toward lower end-inspiratory humidity in patients with radiotherapy or with large surgery-induced oropharyngeal mucosal defects, whereas temperatures were similar. CONCLUSION This study gives objective information about the HME capacity of the upper respiratory tract in patients with head and neck cancer with precautionary tracheotomy, and thus provides target values for HMEs for laryngectomized and tracheotomized patients.
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Affiliation(s)
- Renske J Scheenstra
- Department of Head and Neck Oncology and Surgery, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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Scheenstra RJ, Muller SH, Vincent A, Sinaasappel M, Hilgers FJM. Influence of breathing resistance of heat and moisture exchangers on tracheal climate and breathing pattern in laryngectomized individuals. Head Neck 2010; 32:1069-78. [PMID: 19953628 DOI: 10.1002/hed.21293] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The aim of this study was to determine the influence of breathing resistance of heat and moisture exchangers (HMEs) on endotracheal climate and breathing pattern. METHODS Endotracheal temperature and humidity and tidal volumes were measured in 11 laryngectomized patients with a regularly used HME with "standard" breathing resistance (Provox Normal HME; R-HME), a low breathing-resistance HME (Provox HiFlow HME; L-HME), and without HME. RESULTS Both R-HME and L-HME increased end-inspiratory humidity (+5.8 and 4.7 mgH(2)O/L, respectively), decreased end-inspiratory temperature (-1.6 and -1.0 degrees C, respectively), and prolonged the exhalation breath length to approximately 0.5 seconds. The R-HME significantly enlarged tidal volumes (0.07 L; p < .05). CONCLUSIONS Both HMEs significantly improve tracheal climate. The R-HME has better moistening properties and a small but significant positive effect on tidal volume. Therefore, if the higher resistance is tolerated, the R-HME is the preferred pulmonary rehabilitation device. The L-HME is indicated if lower breathing resistance is required.
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Affiliation(s)
- Renske J Scheenstra
- Department of Head and Neck Oncology and Surgery, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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Caesarean or normal vaginal delivery: overview of physicians' self-preference and suggestion to patients. Arch Gynecol Obstet 2008; 280:33-7. [PMID: 19052758 DOI: 10.1007/s00404-008-0858-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Accepted: 11/17/2008] [Indexed: 10/21/2022]
Abstract
PURPOSE Caesarean delivery in the absence of any medical indications has become a major issue of concern among the women's health professionals. The patients' choice of caesarean is influenced by several factors predominating by their physicians' suggestion. Our objective was to examine factors that may affect the physicians' responses to patients consulting the mode of delivery. METHODS Questionnaires were posted to 1,000 female obstetricians and gynaecologists practicing in Tehran in winter 2007. Questionnaires included demographic information of physicians and their history of pregnancy and delivery. Finally, they were asked their preferred mode of delivery and the mode they suggest when being consulted by parturient. RESULTS From 1,000 physicians, 785 cases (78.5%) responded to the survey. The rate of responses in favour of suggesting normal vaginal delivery, Caesarean Section and painless vaginal delivery was 60.8, 25.6 and 13.6%, respectively. There was a correlation between the suggested and the preferred mode of delivery, it means that the physicians mostly suggested their self-preferred mode of delivery to their patients. CONCLUSIONS Physicians normally suggest to their patients as the safe mode of delivery what they prefer for themselves. This preference and subsequent suggestion is influenced by different factors including their age, marital status, and previous modes of delivery. As conclusion, it is inferred that informing a physician to choose the right mode of delivery for herself leads to better suggestions to the patients.
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Zuur JK, Muller SH, Sinaasappel M, Hart GAM, van Zandwijk N, Hilgers FJM. Influence of heat and moisture exchanger respiratory load on transcutaneous oxygenation in laryngectomized individuals: A randomized crossover study. Head Neck 2007; 29:1102-10. [PMID: 17786991 DOI: 10.1002/hed.20643] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND High-resistance heat and moisture exchangers (HMEs) have been reported to increase transcutaneous oxygenation (tcpO(2)) values in laryngectomized individuals and to negatively influence patient compliance. The goal of the present study was to validate earlier published results on short-term transcutaneous oxygenation changes by high-resistance HMEs. METHODS We conducted a randomized crossover study, monitoring the influence of an HME on tcpO(2) over a 2-hour time interval in 20 subjects. RESULTS No evidence of an immediate HME effect (95% CI: -14.9-13.3 mm Hg, p = .91), or a time-dependent HME effect (95% CI: -.121 - .172 mm Hg/minute, p = .74), on tcpO(2) was found. After fitting the statistical model without time dependency, again no evidence of HME presence was seen (95% CI: -.5 mm Hg - 3.6 mm Hg, p = .15). CONCLUSION In contrast to earlier suggestions, there is no evidence of increased tcpO(2) levels by high-resistance HMEs in laryngectomized individuals. Thus, using such HMEs has no added clinical value in this respect.
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Affiliation(s)
- J Karel Zuur
- Department of Head and Neck Oncology and Surgery, The Netherlands Cancer Institute/ Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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Yao F, Qian Y, Chen S, Wang P, Huang Y. Incidence of extended-spectrum beta-lactamases and characterization of integrons in extended-spectrum beta-lactamase-producing Klebsiella pneumoniae isolated in Shantou, China. Acta Biochim Biophys Sin (Shanghai) 2007; 39:527-32. [PMID: 17622472 DOI: 10.1111/j.1745-7270.2007.00304.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study is concerned with the level of antibiotic resistance of extended-spectrum beta-lactamase (ESBL)-producing Klebsiella pneumoniae, isolated in Shantou, China, and its mechanism. Seventy-four non-repetitive clinical isolates of K. pneumoniae producing ESBLs were isolated over a period of 2 years. Antibiotic susceptibility, carried out by Epsilometer test, showed that most of the isolates were multiresistant. Polymerase chain reaction showed that, among the several types of beta-lactamases, SHV was the most prevalent, TEM was the second most prevalent, and CTX-M was the least prevalent. Sixty-nine isolates were positive for integrase gene IntI1, but no IntI2 or IntI3 genes were found. The variable region of class 1 integrons were amplified and further identified by sequencing. Thirteen different gene cassettes and 11 different cassette combinations were detected. Dfr and aadA cassettes were predominant and cassette combinations dfrA12, orfF and aadA2 were most frequently found. No gene cassettes encoding ESBLs were found. Integrons were prevalent and played an important role in multidrug resistance in ESBL-producing K. pneumoniae.
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Affiliation(s)
- Fen Yao
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China.
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Abstract
Long-term tracheostomy in infants and children is associated with significant morbidity. The majority of paediatric patients experience tracheostomy-related complications during cannulation and/or after decannulation. A large proportion of these complications are, however, preventable or may be minimised by good tracheostomy care and clinical evaluation of the patients at regular intervals, tailored to the needs of the individual child. By and large, infants and children benefit from a specialist tracheostomy service. In this article, we review different aspects of hospital-based care, covering a wide range of topics including the selection of tracheostomy tubes and adjuncts, clinical evaluation, speech/communication, and late complications and their prevention.
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Affiliation(s)
- Ernst Eber
- Respiratory and Allergic Disease Division, Paediatric Department, Medical University of Graz, Auenbruggerplatz 30, A-8036 Graz, Austria.
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Chowers Y, Odes S, Bujanover Y, Eliakim R, Bar Meir S, Avidan B. The month of birth is linked to the risk of Crohn's disease in the Israeli population. Am J Gastroenterol 2004; 99:1974-6. [PMID: 15447759 DOI: 10.1111/j.1572-0241.2004.40058.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The main objective is to study whether the month of birth is associated with the development of Crohn's disease (CD) in the Israeli Jewish population. BACKGROUND It was suggested that perinatal exposure to infectious agents may have a role in the pathogenesis of CD. Due to the seasonal nature of some infections, a linkage between birth dates and a risk to develop CD would support such a hypothesis. Previous studies that addressed this question were conducted in Europe and differed in their findings. METHODS Birth dates of 844 Jewish ulcerative colitis (UC) and CD patients from three medical centers representing the north, central, and the south of Israel were compared with the monthly rates of birth during the same period of time. The standard incidence ratio was used to define the risk to develop either disease according to the month of birth. The Score method was used for the evaluation of seasonality trends. RESULTS Birth during the winter period in Israel was associated with increased risk to develop CD, whereas birth during the spring was associated with a reduced risk. The Score method for seasonality showed a significant peak during winter time in these patients (z = 2.02, p= 0.021). No such seasonal variation was noted for UC patients. CONCLUSIONS A seasonal pattern was observed in the risk to develop CD but not UC. The findings may support the involvement of environmental factors in the pathogenesis of CD.
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Affiliation(s)
- Yehuda Chowers
- Department of Gastroenterology, Chaim Sheba Medical Center, Tel-Hashomer 52621, Israel
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Mathai E, Grape M, Kronvall G. Integrons and multidrug resistance among Escherichia coli causing community-acquired urinary tract infection in southern India. APMIS 2004; 112:159-64. [PMID: 15153157 DOI: 10.1111/j.1600-0463.2004.apm1120301.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Antimicrobial resistance genes are often clustered in integrons, genetic elements capable of recombination. There is a paucity of data on the prevalence and role of integrons from community-acquired infections in developing countries where resistance to co-trimoxazole is high. We determined the prevalence of integrons among Escherichia coli causing community-acquired urinary tract infection (UTI). Consecutive isolates of E. coli obtained from UTI of pregnant women at the Christian Medical College Hospital, Vellore, India, during 2002 were included. All isolates were tested for susceptibility to 16 antimicrobials using the disc diffusion method and for integrons of classes 1 and 2 by PCR. Of the 58 isolates tested, 28 (48.3%) were resistant to co-trimoxazole and trimethoprim. All these isolates carried integrons. Three additional isolates were sulfonamide resistant but integron negative. Class 1 integrons were present in 21 (36.2%) isolates. Resistance to ampicillin (p=0.000), nalidixic acid (p=0.001), chloramphenicol (p=0.02), tetracycline (p=0.004) and gentamicin (p=0.02) was significantly more common in isolates with integrons. DNA sequencing of two isolates with integrons showed the presence of aadA, dfr1 and dfr7 genes. This study demonstrated that integrons are widely prevalent in India and that they might play a role in multidrug resistance in E. coli from community-acquired UTI.
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Affiliation(s)
- Elizabeth Mathai
- Department of Clinical Microbiology, Christian Medical College Hospital, Vellore, India
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Olthuis G, Dekkers W. Medical education, palliative care and moral attitude: some objectives and future perspectives. MEDICAL EDUCATION 2003; 37:928-933. [PMID: 12974850 DOI: 10.1046/j.1365-2923.2003.01635.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
CONTEXT Adequate medical education has 3 interrelated aspects: theoretical knowledge, practical skills and the personal attitude of the doctor. The current emphasis on medical science diverts attention from the importance of the attitude aspect of medical education. We argue that the integration of palliative care into medical curricula can correct this imbalance between knowledge, skills and attitude. In our view, incorporating palliative care into medical training not only improves the quality of palliative care, but also contributes to the moral quality of the doctors being trained. To support our argument we emphasise the moral aspects of attitude. Moral attitude focuses on the capacity to respond to others in a humane manner and can be compared with the way a virtuous doctor acts. We show the crucial role this moral attitude plays in palliative care and the surplus value palliative care education can have in general medical training. PERSPECTIVES We suggest that clinical experience in palliative care, supplemented by reflection on narratives about chronically ill or dying patients and mourning or ageing processes, offers prospects for developing palliative care education. These perspectives can contribute to the transformation of the present 'hidden curriculum' of contemporary medical education, which implicitly shapes the student's moral attitude, into a future more explicit enculturation into the medical realm. Ultimately, this will improve health care as a whole.
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Affiliation(s)
- Gert Olthuis
- University Medical Centre Nijmegen, Nijmegen, the Netherlands.
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Crowley D, Daly M, Lucey B, Shine P, Collins JJ, Cryan B, Moore JE, Murphy P, Buckley G, Fanning S. Molecular epidemiology of cystic fibrosis-linked Burkholderia cepacia complex isolates from three national referral centres in Ireland. J Appl Microbiol 2002; 92:992-1004. [PMID: 11972706 DOI: 10.1046/j.1365-2672.2002.01612.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS Burkholderia cepacia is a Gram-negative bacterium associated with increasing morbidity and mortality and is readily transmitted among infected cystic fibrosis (CF) patients. The B. cepacia complex consists of five distinct subgroups, termed genomovars. A collection of 17 presumptive B. cepacia isolates, obtained from three national CF referral centres located in different geographical regions in Ireland, was studied. The aim of this study was to investigate these isolates using molecular subtyping protocols for evidence of genetic relationships and for the presence of antibiotic resistance-encoding class 1 integron structures. METHODS AND RESULTS Genomovar classifications were assigned to each isolate based on HaeIII enzyme profiles of their recA locus. Genetic relationships among this collection were also assessed after restriction fragment length polymorphism (RFLP)-mediated analysis of the 16S rDNA locus and DNA amplification fingerprinting (DAF). The surface expression of the cable pilus gene (cblA) may facilitate an early step in the infection process. All isolates were tested by amplification strategies for this marker. Burkholderia cepacia is known to be resistant to several antimicrobial agents. Resistance typing showed that the majority were resistant to three or more common antimicrobial agents. Five of the 17 isolates were resistant to sulphonamide, a characteristic linked with the presence of class 1 integrons. Gene cassettes containing beta-lactamase (oxa) and aminoglycoside acetyltransferase (aac(6')-1a) encoding genes were identified by polymerase chain reaction amplification. CONCLUSIONS Most of the isolates in this study were classified as genomovar III and were indistinguishable based on their corresponding 16S rDNA-RFLP profiles, whilst DAF further subtyped the collection. The cblA marker was identified in 47% of the isolates, many of which clustered in the genomovar III group. Class 1 integrons with recombined gene cassettes containing bla-OXA and aac(6')-1a genes were identified. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrates the application of molecular methods to investigate B. cepacia, a well-recognized human pathogen, cultured from Irish CF patients. Genomovar III was the most common genomic type identified. DNA fingerprinting further subtyped the latter isolates, facilitating a more detailed description of the molecular epidemiology. Drug resistance in these organisms can be explained, at least in part, by the presence of class 1 integrons. Development of targeted infection control strategies could be facilitated using these applied methods.
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Affiliation(s)
- D Crowley
- Molecular Diagnostics Unit, Cork Institute of Technology, Bishopstown, Cork, Ireland
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Morris DL, Montgomery SM, Thompson NP, Ebrahim S, Pounder RE, Wakefield AJ. Measles vaccination and inflammatory bowel disease: a national British Cohort Study. Am J Gastroenterol 2000; 95:3507-12. [PMID: 11151885 DOI: 10.1111/j.1572-0241.2000.03288.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Measles vaccination has been suggested as a risk for inflammatory bowel disease. Atypical age of measles infection has also been associated with Crohn's disease. This study was designed to examine the relationship of measles vaccination and age of measles vaccination with later inflammatory bowel disease. METHODS A prospective population-based national birth cohort was used, of those born in 1 wk in April 1970 in Great Britain. The data are from 7616 responding members of the 1970 British Cohort Study with complete vaccination data, who were traced at age 26 yr. A diagnosis of Crohn's disease, ulcerative colitis, and diabetes mellitus (a control disease) was obtained by survey at age 26 yr, and confirmed by physicians. Vaccination data were from survey at age 5 yr. Measles and mumps infection data were obtained from the survey at age 10 yr. Adjustment was made for sex, household crowding in childhood, and father's social class at birth. RESULTS No statistically significant association was found between measles vaccination status at 5 yr and Crohn's disease (adjusted odds ratio [OR] 0.67, 95% confidence interval [CI] 0.27-1.63), ulcerative colitis (adjusted OR 0.57, 95% CI 0.20-1.61), or diabetes (adjusted OR 0.75, 95% CI 0.33-1.74). There was a statistically significant trend (p = 0.040) with increasing age of measles vaccination for risk of Crohn' s disease, although this was based on very few cases vaccinated after age 2 yr. CONCLUSIONS In this cohort, monovalent measles vaccination status is not associated with inflammatory bowel disease by age 26 yr. Older age at measles vaccination needs to be examined in other studies to confirm whether it is a genuine risk for Crohn's disease.
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Affiliation(s)
- D L Morris
- Department of Medicine, Royal Free and University College Medical School, London, UK
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Pardi DS, Tremaine WJ, Sandborn WJ, Loftus EV, Poland GA, Harmsen WS, Zinsmeister AR, Melton LJ. Early measles virus infection is associated with the development of inflammatory bowel disease. Am J Gastroenterol 2000; 95:1480-5. [PMID: 10894583 DOI: 10.1111/j.1572-0241.2000.02082.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The measles virus has been implicated as a possible etiological agent in the development of inflammatory bowel disease (IBD). Measles infection at an early age is associated with subacute sclerosing panencephalitis, a degenerative neurological condition caused by persistent measles infection of the central nervous system. We sought to determine whether infection with measles virus at an early age was also associated with an increased risk of developing IBD. METHODS Patients with measles infection diagnosed before the age of 5 yr were identified through the diagnostic indices of the Mayo Clinic and the Rochester Epidemiology Project. A questionnaire was used to ascertain a subsequent history of IBD, which was confirmed by records from the subjects' physicians. The risks of developing Crohn's disease and ulcerative colitis were calculated relative to expected rates for these conditions in the Olmsted County, Minnesota population. RESULTS Of 1164 eligible cases, 662 (57%) completed the questionnaire. There were six confirmed cases of Crohn's disease and six of ulcerative colitis. The expected number of cases was 1.9 for Crohn's disease (standardized incidence ratio [SIR] 3.1, 95% confidence interval [CI] 1.1-6.8) and 2.0 for ulcerative colitis (SIR 3.0, CI 1.1-6.5). There was a trend towards a higher risk of developing IBD with an earlier age of infection. CONCLUSIONS Early measles infection is associated with an increased risk of developing Crohn's disease and ulcerative colitis. The risk may be higher with earlier infection.
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Affiliation(s)
- D S Pardi
- Department of Health Sciences Research, Mayo Clinic and Mayo Foundation, Rochester, Minnesota, USA
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Wakefield AJ, Montgomery SM. Measles virus as a risk for inflammatory bowel disease: an unusually tolerant approach. Am J Gastroenterol 2000; 95:1389-92. [PMID: 10894567 DOI: 10.1111/j.1572-0241.2000.02066.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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