Related by context. Frequent words. (Click for all words.) 65 retrospective cohort study 64 generalizability 63 placebo controlled clinical 63 multicenter study 62 longitudinal studies 62 multivariate analyzes 61 prospective observational 61 liver transplant recipients 61 substudy 61 randomized trials 61 prospective cohort 61 randomized controlled trial 60 RTOG 60 RCTs 60 immunohistochemical 60 nonrandomized 60 ACRIN 60 univariate 60 Observational studies 60 Randomized controlled 59 subgroup analyzes 59 longitudinal study 59 randomized controlled trials 59 subanalysis 59 placebo controlled studies 59 genetic polymorphisms 59 RRMS patients 59 affective disorders 58 prognostic significance 58 prospective multicenter 58 randomized controlled clinical trials 58 randomized clinical 58 neuropathological 58 histopathologic 58 prospective randomized controlled 57 Thrombolysis 57 Clinical Psychiatry 57 double blinded placebo 57 Arch Intern Med 57 Multicenter 57 retrospectively reviewed 57 chronicity 57 neoadjuvant 57 microRNA expression 56 FDG PET 56 meta analyzes 56 HRQOL 56 observational study 56 thrombophilia 56 multicentre 56 Alzheimer Disease Neuroimaging Initiative 56 epidemiologic studies 56 Patient Registry 56 NHANES III 56 prospectively defined 56 thyroid nodules 56 meta analysis 56 Acute Coronary Syndromes 56 Preoperative 56 MR spectroscopy 56 Arch Neurol 56 rEEG 56 beta blocker therapy 56 elevated CRP 56 noninvasive imaging 56 blind randomized controlled 56 metabolomic 56 sentinel node biopsy 56 histopathological 55 J Clin Oncol 55 multicenter 55 vitro experiments 55 atherothrombosis 55 paclitaxel eluting stents 55 colorectal adenomas 55 T2DM 55 randomized controlled clinical 55 neuropsychiatric symptoms 55 Diabetic Retinopathy 55 Neurology Neurosurgery 55 Chronic Heart Failure 55 varicocele 55 #:#-# [035] 55 endoscopists 55 prepubertal 55 comorbid conditions 55 SYNTAX 55 epithelial ovarian cancer 55 TRITON TIMI 55 cardiac dysfunction 55 pharmacokinetic PK 55 Structured Clinical 55 thromboembolic 55 Ischemic 55 SWOG 55 adjuvant radiation 55 HSCT 55 carotid artery stenting 55 NSABP 55 optical coherence tomography OCT 55 juvenile idiopathic arthritis