EFFECTIVENESS AND RISKS OF BIRTH-CONTROL METHODS

[21] LULL CB, 1940, PENN MED J, V43, P956

[22] PREVALENCE RATES OF UTERINE CERVICAL CARCINOMA IN SITU FOR WOMEN USING DIAPHRAGM OR CONTRACEPTIVE ORAL STEROIDS [J]. BMJ-BRITISH MEDICAL JOURNAL, 1969, 3 (5664): : 195 - +

[23] ETHNIC DIFFERENCES IN PREVALENCE OF ANENCEPHALY AND SPINA BIFIDA IN BOSTON MASSACHUSETTS [J]. NEW ENGLAND JOURNAL OF MEDICINE, 1967, 277 (21) : 1119 - +

[24] PEARL R., 1932, HUMAN BIOL, V4, P363

[25] SEQUENTIAL ORAL CONTRACEPTION AND CLOTTING FACTORS [J]. BRITISH MEDICAL JOURNAL, 1969, 2 (5660) : 822 - &

[26] APPLICATION OF LIFE TABLE TECHNIQUES TO MEASUREMENT OF CONTRACEPTIVE EFFECTIVENESS [J]. DEMOGRAPHY, 1966, 3 (02) : 297 - 304

[27] POTTS DM, 1968, 4 P AS C OBST GYN SI, P151

[28] RICEWRAY E, 1963, FERTIL STERIL, V14, P402

[29] THE DURATION OF POSTPARTUM AMENORRHEA [J]. AMERICAN JOURNAL OF EPIDEMIOLOGY, 1965, 82 (03) : 347 - 358

[30] SATTERTHWAITE A P, 1962, J Am Med Womens Assoc, V17, P797

[21] LULL CB, 1940, PENN MED J, V43, P956

[22] PREVALENCE RATES OF UTERINE CERVICAL CARCINOMA IN SITU FOR WOMEN USING DIAPHRAGM OR CONTRACEPTIVE ORAL STEROIDS [J]. BMJ-BRITISH MEDICAL JOURNAL, 1969, 3 (5664): : 195 - +

[23] ETHNIC DIFFERENCES IN PREVALENCE OF ANENCEPHALY AND SPINA BIFIDA IN BOSTON MASSACHUSETTS [J]. NEW ENGLAND JOURNAL OF MEDICINE, 1967, 277 (21) : 1119 - +

[24] PEARL R., 1932, HUMAN BIOL, V4, P363

[25] SEQUENTIAL ORAL CONTRACEPTION AND CLOTTING FACTORS [J]. BRITISH MEDICAL JOURNAL, 1969, 2 (5660) : 822 - &

[26] APPLICATION OF LIFE TABLE TECHNIQUES TO MEASUREMENT OF CONTRACEPTIVE EFFECTIVENESS [J]. DEMOGRAPHY, 1966, 3 (02) : 297 - 304

[27] POTTS DM, 1968, 4 P AS C OBST GYN SI, P151

[28] RICEWRAY E, 1963, FERTIL STERIL, V14, P402

[29] THE DURATION OF POSTPARTUM AMENORRHEA [J]. AMERICAN JOURNAL OF EPIDEMIOLOGY, 1965, 82 (03) : 347 - 358

[30] SATTERTHWAITE A P, 1962, J Am Med Womens Assoc, V17, P797