title: Cooperative clinical investigation. A modality of medical science.
mesh_terms: D004358:Drug Therapy; D006801:Humans; D009369:Neoplasms / Q000628:therapy; D004364:Pharmaceutical Preparations / Q000008:administration & dosage; D011446:Prospective Studies; D011878:Radiotherapy; D012075:Remission, Spontaneous; D012106:Research; D013514:Surgical Procedures, Operative; D013812:Therapeutics; D013997:Time Factors
chemical_list: D004364:Pharmaceutical Preparations