Related by context. Frequent words. (Click for all words.) 65 retrospective cohort study 64 subgroup analyzes 64 meta analysis 64 randomized controlled clinical trials 64 meta analyzes 63 placebo controlled studies 63 randomized controlled trials 62 epidemiologic studies 62 correlational 62 RCTs 62 neuroimaging studies 62 logistic regression analysis 62 multivariate analyzes 61 biopsychosocial 61 nonrandomized 61 Observational studies 61 microbiologic 60 prospective observational 60 randomized trials 60 etiologic 59 pharmacological approaches 59 pharmaco 59 immunohistochemical 59 rEEG 59 placebo controlled trials 59 NHANES III 59 pharmacological interventions 59 neuroanatomical 58 genetic polymorphisms 58 subanalysis 58 multivariate logistic regression 58 covariate 58 Cochrane Database 58 observational studies 58 pharmacotherapies 58 histopathological 58 univariate 58 pharmacokinetic studies 58 rFVIIa 58 analgesic efficacy 58 #:#-# [029] 58 MR spectroscopy 58 SABCS 58 CALGB 58 antihypertensive therapy 58 strontium ranelate 58 logistic regression 58 Randomized controlled 58 thrombophilia 58 randomized clinical trials 58 nonclinical studies 58 lipid lowering agents 58 thromboprophylaxis 58 longitudinal studies 57 affective disorders 57 #:#-# [035] 57 CROI 57 etiological 57 psychotherapies 57 vitro experiments 57 experimentally induced 57 prognostic significance 57 metabolic parameters 57 genotypic 57 neuroleptics 57 Pharmacokinetic 57 #:#-# [031] 57 pharmacoeconomic 57 Comorbidity 57 posttreatment 57 substudy 57 murine model 57 generalizability 57 dietary interventions 57 cytological 57 Systematic Review 57 liver transplant recipients 57 recurrent miscarriage 56 PROSTVAC TM 56 epidemiological studies 56 epidemiologic 56 empiric 56 pharmacodynamic effects 56 platelet activation 56 neurocognitive function 56 Systematic Reviews 56 Immunohistochemistry 56 GnRH agonists 56 ALLHAT 56 secretin 56 pharmacokinetic parameters 56 placebo controlled clinical 56 prospectively defined 56 psychoeducation 56 cardio metabolic 56 pharmacokinetic PK 56 tigecycline 56 serum markers 56 MERLIN TIMI 56 Arch Neurol 56 Neurochemistry