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- [2] Breslow N.E., 1980, STAT METHODS CANC RE, P192
- [3] THE RELATIONSHIP OF TUBAL INFERTILITY TO BARRIER METHOD AND ORAL-CONTRACEPTIVE USE [J]. JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1987, 257 (18): : 2446 - 2450
- [5] INTRAUTERINE-DEVICES AND ACUTE PELVIC INFLAMMATORY DISEASE [J]. JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1976, 235 (17): : 1851 - 1853
- [6] Fleiss JL, 1981, STATISTICAL METHODS, P61
- [8] HILTON AL, 1974, BRIT J VENER DIS, V50, P1
- [10] BARRIER-METHOD CONTRACEPTIVES AND PELVIC INFLAMMATORY DISEASE [J]. JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1982, 248 (02): : 184 - 187