Related by context. Frequent words. (Click for all words.) 74 MEDLINE 57 CrossRef 56 ClinicalTrials.gov 55 ScienceDirect 54 bibliographic 53 peer reviewed 53 #:#-# [006] 52 www.clinicaltrials.gov 52 peer reviewed journals 52 Cochrane Database 51 Systematic Reviews 51 Pharmacotherapy 51 bibliographies 51 ontologies 50 Medline 50 #:#-# [033] 50 peer reviewed literature 50 CrossRef Medline 50 journals 50 #:#-# [029] 49 #:#-# [035] 49 Cochrane Library 49 #:#-# [023] 49 PMID # [002] 49 #:#-# [028] 49 #:#-# [037] 49 Arch Intern Med 49 scientific journals 49 monographs 49 Free Full Text 48 NEJM 48 meta analyzes 48 #:#-# [031] 48 keyword searches 48 Searchable 48 scholarly journals 48 Abstracts 47 abstracts 47 #:#-# [001] 47 bibliography 47 CrossRef Web 47 NextBio 47 UpToDate 47 RCTs 47 ontology 47 Molecular Cancer 46 Abstract Free Full Text 46 federated search 46 Bibliography 46 indexed 45 randomized controlled trials 45 meta analysis 45 databases 45 Lookup 44 datasets 44 Clinical Psychiatry 44 peer reviewed publications 44 Epub ahead 44 #:#-# [022] 44 database 44 search engines 44 NCCAM 44 GenBank 44 searchable 44 Databases 43 NIH 43 endnotes 43 Nexis 43 knowledgebase 43 biomarker discovery 43 peer reviewed scientific 43 Knowledgebase 43 google 43 AHRQ 43 keyword 43 peer reviewed papers 43 #:#-# [016] 43 Clinical Infectious Diseases 42 Google.com 42 Database 42 peer reviewed journal 42 www.fda.gov 42 Project Gutenberg 42 search engine 42 epidemiologic studies 42 webpages 42 silico 42 glossaries 42 National Institutes 42 Pharmacogenomics 42 www.google.com 42 peer reviewed publication 41 repositories 41 Proteomics 41 google.com 41 ASCO Annual Meeting 41 Descriptive 41 Dogpile 41 Elsevier 41 Knowledge Base 41 scientific