title: Clinical trial participation poses ethical, practical issues.
authors.forename: Ann
authors.initials: A
authors.lastname: Silversides
mesh_terms: D002170:Canada; D016265:Conflict of Interest; D005249:Fees and Charges / Q000941:ethics*; D006801:Humans; D018579:Patient Selection / Q000941:ethics*; D010820:Physicians / Q000191:economics / Q000941:ethics