Related by context. Frequent words. (Click for all words.) 63 meta analysis 63 placebo controlled studies 61 RCTs 61 Cochrane Database 60 bmj.com today 60 bmj.com 60 calcium supplementation 59 randomized controlled trials 59 placebo controlled trials 58 meta analyzes 58 subgroup analyzes 58 journal Sleep 57 lipid lowering drugs 57 journal Biological Psychiatry 57 antioxidant supplements 57 Clinical Endocrinology & 57 randomized controlled clinical trials 57 randomized trials 57 observational studies 56 study 56 journal Hypertension 56 epidemiologic studies 56 multicenter study 55 TRITON TIMI 55 retrospective cohort study 55 randomized clinical trials 55 journal Stroke 55 Health Initiative WHI 55 Clinical Endocrinology 55 placebo controlled clinical 55 journal Addiction 55 Neurology Neurosurgery 54 candesartan 54 Rosuvastatin 54 randomized controlled trial 54 prospective cohort 54 Cochrane Library 54 Lancet Oncology 54 prospective observational 54 folic acid supplementation 54 observational study 54 anastrozole 54 Combination therapy 54 substudy 53 Lancet Infectious Diseases 53 JAMA. 53 Systematic Reviews 53 epidemiological studies 53 Thorax 53 Epidemiological studies 53 journal BMC 53 multicentre 53 Molecular Cancer 53 Medicine NEJM 53 journal Neurology 53 CANCER peer reviewed 52 teriparatide 52 Lancet Neurology 52 postmenopausal breast cancer 52 Lp PLA2 52 salmeterol 52 journal Chest 52 Arch Intern Med 52 journal Obesity 52 randomized controlled 52 #:#-# [029] 52 cardiovascular morbidity 52 DASH diet 52 glatiramer acetate 52 #:#-# [033] 51 Pycnogenol 51 telmisartan 51 perindopril 51 journal Arthritis 51 #:#-# [035] 51 myocardial infarctions 51 Applied Physiology 51 antithrombotic 51 soy isoflavones 51 vitamin D supplementation 51 journal Human Reproduction 51 FOSRENOL R 51 folate intake 51 IQWiG 51 journal Obstetrics & 51 estrogen progestin 51 risedronate 51 Investigative Dermatology 51 EEGs 51 Health HSPH 51 journal Cell Metabolism 51 Psychosomatic Medicine 51 antihypertensive medications 51 longitudinal studies 51 celecoxib 51 postoperative complications 51 angiotensin receptor blockers 51 double blinded placebo 51 CAPRISA 51 Meta Analysis 51 randomized controlled clinical