引用本文: | 吴一龙. 必须重视阴性结果的临床研究[J]. 循证医学, 2003, 3(1): 1-2. DOI: 10.3969/j.issn.1671-5144.2003.01.001 |
Citation: | Clinical trials of negative results must be emphasized[J]. Journal of Evidence-Based Medicine, 2003, 3(1): 1-2. DOI: 10.3969/j.issn.1671-5144.2003.01.001 |