title: TOPS: an internet-based system to prevent healthy subjects from over-volunteering for clinical trials.
authors.forename: Malcolm
authors.initials: M
authors.lastname: Boyce
authors.forename: Mavi
authors.initials: M
authors.lastname: Walther
authors.forename: Hilke
authors.initials: H
authors.lastname: Nentwich
authors.forename: John
authors.initials: J
authors.lastname: Kirk
authors.forename: Stephen
authors.initials: S
authors.lastname: Smith
authors.forename: Steve
authors.initials: S
authors.lastname: Warrington
mesh_terms: D035843:Biomedical Research / Q000458:organization & administration*; D002986:Clinical Trials as Topic / Q000592:standards*; D006801:Humans; D020407:Internet; D033281:Nontherapeutic Human Experimentation / Q000592:standards*; D035842:Research Subjects