title: Recruitment, retention and other methodological issues related to clinical trials for Alzheimer's disease.
authors.forename: B
authors.initials: B
authors.lastname: Vellas
mesh_terms: D000544:Alzheimer Disease / Q000188:drug therapy* / Q000503:physiopathology; D002986:Clinical Trials as Topic / Q000379:methods*; D016208:Databases, Factual; D006801:Humans; D018579:Patient Selection