Clinic operation: quality control of data collection and follow-up procedures.
D002986:Clinical Trials as Topic / Q000592:standards*; D003327:Coronary Disease / Q000517:prevention & control*; D003625:Data Collection / Q000592:standards*; D005500:Follow-Up Studies; D058016:Health Facility Administration; D006801:Humans; D010349:Patient Compliance; D011786:Quality Control