title: The dangers of ad hoc protocols.
mesh_terms: D002986:Clinical Trials as Topic / Q000592:standards*; D004341:Drug Evaluation / Q000592:standards*; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy / Q000532:radiotherapy; D010344:Patient Advocacy / Q000592:standards*; D012107:Research Design