title: Designing research in vulnerable populations: lessons from HIV prevention trials that stopped early.
authors.affiliation: Department of Clinical Epidemiology and Biostatistics, McMaster University, HSC-2C12, 1200 Main Street West, Hamilton, ON, Canada L8N 3Z5. millsej@mcmaster.ca
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Mills
authors.forename: Sonal
authors.initials: S
authors.lastname: Singh
authors.forename: Jerome A
authors.initials: JA
authors.lastname: Singh
authors.forename: James J
authors.initials: JJ
authors.lastname: Orbinski
authors.forename: Mitchell
authors.initials: M
authors.lastname: Warren
authors.forename: Ross E
authors.initials: RE
authors.lastname: Upshur
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods* / Q000592:standards; D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D017060:Patient Satisfaction; D012107:Research Design; D012657:Self-Help Groups; D035862:Vulnerable Populations