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- [5] SAMPLE-SIZE AND POWER IN PSYCHIATRIC RESEARCH CANADIAN JOURNAL OF PSYCHIATRY-REVUE CANADIENNE DE PSYCHIATRIE, 1990, 35 (07): : 616 - 620
- [9] SAMPLE-SIZE AND STATISTICAL POWER IN REPRODUCTIVE RESEARCH OBSTETRICS AND GYNECOLOGY, 1995, 86 (02): : 302 - 305
- [10] SAMPLE-SIZE FOR CLINICAL AND BIOLOGICAL-RESEARCH AUSTRALIAN AND NEW ZEALAND JOURNAL OF MEDICINE, 1989, 19 (01): : 64 - 68