共 50 条
- [4] Commentary: participants should have been told they were being randomised BRITISH MEDICAL JOURNAL, 2000, 320 (7248): : 1509 - 1509
- [6] TO HAVE BEEN OR NOT TO HAVE BEEN JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1964, 190 (09): : 849 - &
- [7] TO HAVE BEEN OR NOT TO HAVE BEEN JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1965, 191 (06): : 504 - &