Do information systems improve the quality of clinical research? Results of a randomized trial in a cooperative multi-institutional cancer group.
D001853:Bone Marrow / Q000187:drug effects; D002986:Clinical Trials as Topic / Q000379:methods*; D004334:Drug Administration Schedule; D004359:Drug Therapy, Combination; D006689:Hodgkin Disease / Q000188:drug therapy*; D006801:Humans; D007256:Information Systems; D012107:Research Design