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Mattsson N, Rosén E, Hansson O, Andreasen N, Parnetti L, Jonsson M, Herukka SK, van der Flier WM, Blankenstein MA, Ewers M, Rich K, Kaiser E, Verbeek MM, Olde Rikkert M, Tsolaki M, Mulugeta E, Aarsland D, Visser PJ, Schröder J, Marcusson J, de Leon M, Hampel H, Scheltens P, Wallin A, Eriksdotter-Jönhagen M, Minthon L, Winblad B, Blennow K, Zetterberg H. Age and diagnostic performance of Alzheimer disease CSF biomarkers. Neurology 2012; 78:468-76. [PMID: 22302554 DOI: 10.1212/wnl.0b013e3182477eed] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES Core CSF changes in Alzheimer disease (AD) are decreased amyloid β(1-42), increased total tau, and increased phospho-tau, probably indicating amyloid plaque accumulation, axonal degeneration, and tangle pathology, respectively. These biomarkers identify AD already at the predementia stage, but their diagnostic performance might be affected by age-dependent increase of AD-type brain pathology in cognitively unaffected elderly. METHODS We investigated effects of age on the diagnostic performance of CSF biomarkers in a uniquely large multicenter study population, including a cross-sectional cohort of 529 patients with AD dementia (median age 71, range 43-89 years) and 304 controls (67, 44-91 years), and a longitudinal cohort of 750 subjects without dementia with mild cognitive impairment (69, 43-89 years) followed for at least 2 years, or until dementia diagnosis. RESULTS The specificities for subjects without AD and the areas under the receiver operating characteristics curves decreased with age. However, the positive predictive value for a combination of biomarkers remained stable, while the negative predictive value decreased only slightly in old subjects, as an effect of the high AD prevalence in older ages. CONCLUSION Although the diagnostic accuracies for AD decreased with age, the predictive values for a combination of biomarkers remained essentially stable. The findings highlight biomarker variability across ages, but support the use of CSF biomarkers for AD even in older populations.
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Eckerström C, Olsson E, Klasson N, Bjerke M, Göthlin M, Jonsson M, Rolstad S, Malmgren H, Wallin A, Edman A. High white matter lesion load is associated with hippocampal atrophy in mild cognitive impairment. Dement Geriatr Cogn Disord 2011; 31:132-8. [PMID: 21293123 DOI: 10.1159/000323014] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/11/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Mild cognitive impairment (MCI) is a heterogeneous condition suggested as a prodromal state of Alzheimer's disease (AD) and subcortical vascular dementia (SVD). Recent findings suggest that white matter lesions (WML) may be associated with hippocampal atrophy. The objective of the study was to examine hippocampal and WML volumes in MCI patients and to examine if WML were linked to hippocampal atrophy. METHODS The Gothenburg MCI study is a clinically based longitudinal study with biennial clinical assessments. The participants (n = 166) consist of 92 patients with stable MCI, 30 patients with converting MCI, and 44 healthy controls. WML volumes was measured manually using MRIcron. Automated segmentation of hippocampal and total white matter volumes was performed using FreeSurfer. RESULTS The patients converting from MCI to dementia had reduced hippocampal volume. Stable MCI patients had fewer WML and converting MCI patients had more WML compared to controls. Hippocampal volume was only correlated to WML volume (ρ = 0.57; p < 0.01) in the quartile (n = 42) with the most WML. CONCLUSIONS Hippocampal atrophy is present in both AD and SVD. Hippocampal volume was associated with WML volume only in the high WML quartile, suggesting that the WML volume must reach a threshold before hippocampal atrophy is seen.
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Blennow K, Jonsson M, Andreasen N, Rosengren L, Wallin A, Hellström PA, Zetterberg H. No neurochemical evidence of brain injury after blast overpressure by repeated explosions or firing heavy weapons. Acta Neurol Scand 2011; 123:245-51. [PMID: 20637009 DOI: 10.1111/j.1600-0404.2010.01408.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Psychiatric and neurological symptoms are common among soldiers exposed to blast without suffering a direct head injury. It is not known whether such symptoms are direct consequences of blast overpressure. OBJECTIVE To examine if repeated detonating explosions or firing if of heavy weapons is associated with neurochemical evidence of brain damage. MATERIALS AND METHODS Three controlled experimental studies. In the first, army officers were exposed to repeated firing of a FH77B howitzer or a bazooka. Cerebrospinal fluid (CSF) was taken post-exposure to measure biomarkers for brain damage. In the second, officers were exposed for up to 150 blasts by firing a bazooka, and in the third to 100 charges of detonating explosives of 180 dB. Serial serum samples were taken after exposure. Results were compared with a control group consisting of 19 unexposed age-matched healthy volunteers. RESULTS The CSF biomarkers for neuronal/axonal damage (tau and neurofilament protein), glial cell injury (GFAP and S-100b), blood-brain barrier damage (CSF/serum albumin ratio) and hemorrhages (hemoglobin and bilirubin) and the serum GFAP and S-100b showed normal and stable levels in all exposed officers. DISCUSSION Repeated exposure to high-impact blast does not result in any neurochemical evidence of brain damage. These findings are of importance for soldiers regularly exposed to high-impact blast when firing artillery shells or other types of heavy weapons.
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Asp J, Steel D, Jonsson M, Ameen C, Dahlenborg K, Jeppsson A, Lindahl A, Sartipy P. Cardiomyocyte Clusters Derived from Human Embryonic Stem Cells Share Similarities with Human Heart Tissue. J Mol Cell Biol 2010; 2:276-83. [DOI: 10.1093/jmcb/mjq022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Jonsson M, Hanson U, Lidell C, Nordén-Lindeberg S. ST depression at caesarean section and the relation to oxytocin dose. A randomised controlled trial. BJOG 2010. [DOI: 10.1111/j.1471-0528.2010.02626.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jestoi M, Jonsson M, Koivisto P, Heinonen R, Isoniemi A, Kokkonen U, Anttila M, Peltonen K. Acute oral toxicity of fusarium-mycotoxin moniliformin. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.1054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jonsson M, Edman A, Lind K, Rolstad S, Sjögren M, Wallin A. Apathy is a prominent neuropsychiatric feature of radiological white-matter changes in patients with dementia. Int J Geriatr Psychiatry 2010; 25:588-95. [PMID: 19852002 DOI: 10.1002/gps.2379] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Cerebral white-matter changes (WMCs) are frequently found in dementia and have been proposed to be related to vascular factors and a certain symptomatological profile. However, few studies have included both vascular factors and a broad spectrum of cognitive, neurological and psychiatric symptoms, easily detectable by the physician in the everyday clinical work. The objective was to study the relationships between WMCs on MRI/CT and neuropsychiatric symptoms and vascular factors in patients with cognitive impairment. METHODS One hundred and seventy-six patients with Alzheimer's disease, vascular dementia, mixed dementia, and mild cognitive impairment were included. All patients underwent a standardized examination including medical history, clinical examinations, laboratory tests and brain imaging (CT or MRI). The identification and severity degree of WMCs was assessed blindly to clinical findings, using a semi-quantitative scale. For statistical analyses, patients were grouped based on absence or presence of WMCs. Significant variables in bivariate analyses were included as predictors in stepwise multiple logistic regression analyses. RESULTS Bivariate analyses showed significant associations between WMCs and age, gender, blood pressure, hypertension, ischaemic heart disease and TIA/RIND. Furthermore, there were significant associations between WMCs and apathy, mental slowness, disinhibition, gait disturbance and focal neurologic symptoms. The multivariate logistic model revealed apathy, mental slowness and age as the most consistent predicting factors for WMCs, together with MRI as a radiological method for the detection of WMCs. CONCLUSIONS The findings indicate that WMCs in patients with dementia are associated with a dysexecutive-related behavioural symptom profile, vascular factors related to small and large vessel diseases and age.
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Dubey B, Zhao TG, Jonsson M, Rahmanov H. A solution to the accelerated-predator-satiety Lotka-Volterra predator-prey problem using Boubaker polynomial expansion scheme. J Theor Biol 2010; 264:154-60. [PMID: 20109470 DOI: 10.1016/j.jtbi.2010.01.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2009] [Revised: 01/21/2010] [Accepted: 01/21/2010] [Indexed: 10/19/2022]
Abstract
In this study, an analytical method is introduced for the identification of predator-prey populations time-dependent evolution in a Lotka-Volterra predator-prey model which takes into account the concept of accelerated-predator-satiety. Oppositely to most of the predator-prey problem models, the actual model does not suppose that the predation is strictly proportional to the prey density. In reference to some recent experimental results and particularly to the conclusions of May (1973) about predators which are 'never not hungry', an accelerated satiety function is matched with the initial conventional equations. Solutions are plotted and compared to some relevant ones. The obtained trends are in good agreement with many standard Lotka-Volterra solutions except for the asymptotic behaviour.
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Jonsson M, Frohm B, Malm J. Binding of Semenogelin I to Intact Human Spermatozoa Studied by Flow Cytometry and Surface Plasmon Resonance. ACTA ACUST UNITED AC 2010; 31:560-5. [DOI: 10.2164/jandrol.109.008672] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Jonsson M. Metabolic acidosis at birth and suboptimal care-illustration of the gap between knowledge and clinical practice. BJOG 2010. [DOI: 10.1111/j.1471-0528.2010.02510.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jonsson M. Oxytocin at caesarean section - are we giving too much? BJOG 2010. [DOI: 10.1111/j.1471-0528.2009.02430.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jonsson M, Zetterberg H, Van Straaten E, Lind K, Syversen S, Edman Å, Blennow K, Rosengren L, Pantoni L, Inzitari D, Wallin A. Cerebrospinal fluid biomarkers of white matter lesions - cross-sectional results from the LADIS study. Eur J Neurol 2009; 17:377-82. [DOI: 10.1111/j.1468-1331.2009.02808.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Thorstenson A, Jonsson M, Henningsohn L, Hosseini A, Wikjstrom H, Schumacher M, Wiklund P. UP-3.022: Timing of Complications after Radical Cystectomy for Bladder Cancer. Urology 2009. [DOI: 10.1016/j.urology.2009.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jonsson M, Lindeberg SN, Hanson U. O426 ST depression at Caesarean section and the relation to oxytocin dose. A randomised controlled trial. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60799-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jonsson M, Hanson U, Lidell C, Nordén-Lindeberg S. ST depression at caesarean section and the relation to oxytocin dose. A randomised controlled trial. BJOG 2009; 117:76-83. [PMID: 19781043 DOI: 10.1111/j.1471-0528.2009.02356.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate whether there is a difference in occurrence of electrocardiogram changes suggestive of myocardial ischaemia between two different doses of oxytocin. DESIGN Double-blind randomised controlled trial. SETTING University hospital in Sweden. POPULATION A total of 103 healthy women undergoing elective caesarean section under spinal anaesthesia. METHODS The participants were randomised to 5 or 10 units of oxytocin, given as an intravenous bolus. A Holter monitor was used to record electrocardiograms and non invasive blood pressure and heart rate (HR) was monitored. A blood sample was obtained 12-hour postoperatively. MAIN OUTCOME MEASURES Depression of the ST segment. SECONDARY OUTCOMES symptoms, Troponon I levels, mean arterial pressure (MAP), HR and blood loss. RESULTS There was a significant difference in occurrence of ST depressions associated with oxytocin administration, 4 (7.7%) with 5 and 11 (21.6%) with 10 units, P < 0.05. The absolute risk reduction was 13.9% (95% confidence interval, 0.5-27.3). Decrease of mean MAP from baseline to 2 minutes differed, being 9 mmHg in the 5 unit group and 17 mmHg in the 10 unit group (P < 0.01). The increase in mean HR did not differ. Troponin I levels were increased in four subjects (3.9%). There were no differences in occurrence of symptoms, Troponin I levels, or estimated blood loss. CONCLUSION ST depressions were associated with oxytocin administration significantly more often in subjects receiving 10 units compared with 5 units. Interventions to prevent hypotension during caesarean section may reduce the occurrence of ST depressions on electrocardiograms.
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Wibom R, Lasorsa FM, Töhönen V, Barbaro M, Sterky FH, Kucinski T, Naess K, Jonsson M, Pierri CL, Palmieri F, Wedell A. AGC1 deficiency associated with global cerebral hypomyelination. N Engl J Med 2009; 361:489-95. [PMID: 19641205 DOI: 10.1056/nejmoa0900591] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The mitochondrial aspartate-glutamate carrier isoform 1 (AGC1), specific to neurons and muscle, supplies aspartate to the cytosol and, as a component of the malate-aspartate shuttle, enables mitochondrial oxidation of cytosolic NADH, thought to be important in providing energy for neurons in the central nervous system. We describe AGC1 deficiency, a novel syndrome characterized by arrested psychomotor development, hypotonia, and seizures in a child with a homozygous missense mutation in the solute carrier family 25, member 12, gene SLC25A12, which encodes the AGC1 protein. Functional analysis of the mutant AGC1 protein showed abolished activity. The child had global hypomyelination in the cerebral hemispheres, suggesting that impaired efflux of aspartate from neuronal mitochondria prevents normal myelin formation.
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Jonsson M, Nordén-Lindeberg S, Östlund I, Hanson U. Metabolic acidosis at birth and suboptimal care - illustration of the gap between knowledge and clinical practice. BJOG 2009; 116:1453-60. [DOI: 10.1111/j.1471-0528.2009.02269.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jonsson M, Wratten SD, Robinson KA, Sam SA. The impact of floral resources and omnivory on a four trophic level food web. BULLETIN OF ENTOMOLOGICAL RESEARCH 2009; 99:275-285. [PMID: 19063752 DOI: 10.1017/s0007485308006275] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Omnivory is common among arthropods, but little is known about how availability of plant resources and prey affects interactions between species operating at the third and fourth trophic level. We used laboratory and field cage experiments to investigate how the provision of flowers affects an omnivorous lacewing, Micromus tasmaniae (Hemerobiidae) and its parasitoid Anacharis zealandica (Figitidae). The adult lacewing is a true omnivore that feeds on both floral resources and aphids, whereas the parasitoid is a life-history omnivore, feeding on lacewing larvae in the larval stage and floral nectar as an adult. We showed that the effect of floral resources (buckwheat) on lacewing oviposition depends on prey (aphid) density, having a positive effect only at low prey density and that buckwheat substantially increases the longevity of the adult parasitoid. In field cages, we tested how provision of flowering buckwheat affects the dynamics of a four trophic level system, comprising parasitoids, lacewings, pea aphids and alfalfa. We found that provision of buckwheat decreased the density of lacewings in the first phase of the experiment when the density of aphids was high. This effect was probably caused by increased rate of parasitism by the parasitoid, which benefits from the presence of buckwheat. Towards the end of the experiment when the aphid populations had declined to low levels, the effect of buckwheat on lacewing density became positive, probably because lacewings were starving in the no-buckwheat treatment. Although presence of buckwheat flowers did not affect aphid populations in the field cages, these findings highlight the need to consider multitrophic interactions when proposing provision of floral resources as a technique for sustainable pest management.
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Thysell H, Bygren P, Bengtsson U, Lindholm T, Norlin M, Jonsson M, Brun C, Larsen S, Jørgensen F, Sjöholm A, Laurell AB. Immunosuppression and the additive effect of plasma exchange in treatment of rapidly progressive glomerulonephritis. ACTA MEDICA SCANDINAVICA 2009; 212:107-14. [PMID: 7148502 DOI: 10.1111/j.0954-6820.1982.tb03180.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Attempts were made to evaluate the separate effect on kidney function of immunosuppressive treatment (IS) and plasma exchange (PE) in 27 patients with rapidly progressive glomerulonephritis (RPGN). Twenty-four of the patients were treated with PE. Initial IS was supplemented with PE within 6-12 days in 5 patients, and after at least 14 days in 13. Because of suspected septicemia, 2 patients were first treated with PE, and IS was not initiated until the possibility of septicemia had been excluded. In 4 severely ill patients wih rapid clinical deterioration, both treatments were started simultaneously. Twenty patients improved during one or both treatments, 4 with IS alone, 2 with IS and doubtfully with PE, 3 with IS and probably also with PE, 5 both with IS and PE and one with PE alone. In 5 patients the individual effects of IS and PE could not be evaluated. In another 2 patients the combined treatment seemed to influence the course favourably. In the remaining 7 patients the effect of the treatment was doubtful or nil. Two further patients with Goodpasture's syndrome were treated. They were admitted late, and both kinds of treatment were instituted simultaneously. One of them died in respiratory insufficiency, the other remained oliguric while the pulmonary changes faded. Thus, PE added a positive effect to IS in several patients with RPGN. The treatment had few and mostly mild side-effects.
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Thorstenson A, O'Connor C, Ahonen R, Jonsson M, Wijkström H, Akre O, Abolfazl Hosseini A, Wiklund P, Henningsohn L. MP-2.16: Clinical Outcome Following Prostatic Capsule and Seminal Sparing Cystectomy for Bladder Cancer in 25 Men. Urology 2008. [DOI: 10.1016/j.urology.2008.08.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bengtsson L, Jonsson M, Apelqvist J. Wound-related pain is underestimated in patients with diabetic foot ulcers. J Wound Care 2008; 17:433-5. [DOI: 10.12968/jowc.2008.17.10.31306] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hedmark Å, Jonsson M. Treatment of log yard runoff in a couch grass infiltration wetland in Sweden. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/00207230701406906] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Cherkasov AR, Jonsson M, Galkin VI, Cherkasov RA. Correlation analysis in the chemistry of free radicals. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2001v070n01abeh000574] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Carlsson S, Nilsson A, Jonsson M, Wiklund N. 409 LEARNING CURVE CONCERNING POSITIVE SURGICAL MARGINS FOR DA VINCI ROBOTIC ASSISTED LAPAROSCOPIC RADICAL PROSTATECTOMY. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s1569-9056(07)60407-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zetterberg H, Hietala MA, Jonsson M, Andreasen N, Styrud E, Karlsson I, Edman A, Popa C, Rasulzada A, Wahlund LO, Mehta PD, Rosengren L, Blennow K, Wallin A. Neurochemical aftermath of amateur boxing. Scand J Med Sci Sports 2006. [DOI: 10.1111/j.1600-0838.2006.00610_2.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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