Related by context. Frequent words. (Click for all words.) 67 MEDLINE 62 PubMed 54 CrossRef 54 Cochrane Database 54 bibliographic databases 53 #:#-# [032] 52 bibliographies 52 clinicaltrials.gov 51 Systematic Reviews 51 ClinicalTrials.gov 51 IQWiG 51 SearchMedica 50 bibliographic 50 #:# -# [002] 50 #:#-# [033] 50 Clinical Gastroenterology 50 PLoS Computational Biology 50 Nationwide Inpatient Sample 49 Nexis database 49 #:#-# [029] 49 journal Critical Care 49 MedlinePlus 48 #:#-# [006] 48 RCTs 48 Molecular Cancer 48 biospecimens 48 journals 48 #:#-# [019] 48 Cochrane Library 47 Epilepsia 47 Molecular Psychiatry 47 #:#-# [035] 47 www.nejm.org 47 #:#-# [037] 47 PubMed Central 47 #:#-# [001] 47 bibliographical 47 JSTOR 47 Arch Neurol 47 Am J Epidemiol 47 journal Gastroenterology 47 Buffalo Bills Insider 47 EBSCOhost 47 http:/www.clinicaltrials.gov 46 hakia 46 Bibliography 46 Medpedia 46 retrospective cohort study 46 journal Thorax 46 #:#-# [003] 46 journal PLoS Pathogens 46 compendia 46 peer reviewed 46 biostatisticians 46 biospecimen 46 www.clinicaltrials.gov 46 Diabetologia 46 meta analyzes 46 microbial genomes 45 Biophysical 45 #:#-# [028] 45 Searchable 45 Arch Intern Med 45 Free Full Text 45 PMID # [001] 45 unpublished 45 Archives 45 Arch Pediatr Adolesc Med 45 CrossRef Medline 45 disseminates systematic reviews 45 journal Gut 45 database 45 HealthGate 45 #:#-# [025] 45 Alcohol Dependence 45 genomic sequences 44 Pubget 44 Datasets 44 WorldCat 44 ISSN #-# 44 anthropometric 44 Repositories 44 logistic regression analysis 44 Comorbidity 44 Ambulatory Medical 44 histopathologic 44 Multivariate 44 ScienceDirect 44 Consensus Statement 44 Medical Expenditure Panel 44 slave narratives 44 Psychosomatics 44 Catheterization 44 Database 44 arXiv 44 Carcinogenesis 44 CrossRef Web 44 phylogenetic analysis 44 keyphrase 44 Molecular Therapy 44 punctuation omitted