Source:http://linkedlifedata.com/resource/umls/id/C0013072
MSH: A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.,NCI: A clinical trial in which the medical staff, the patient, and the people who analyze the results do not know the specific type of treatment the patient receives until after the clinical trial is over.,NCI: A study in which neither the subject nor the investigator nor the research team interacting with the subject or data during the trial knows what treatment a subject is receiving. (CDISC glossary),NCI: A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment. (MSH2001)