RISK-FACTORS ASSOCIATED WITH THE OCCURRENCE OF PRETERM BIRTH

[21] SPONTANEOUS-ABORTIONS BY OCCUPATION AND SOCIAL-CLASS IN FINLAND [J]. INTERNATIONAL JOURNAL OF EPIDEMIOLOGY, 1980, 9 (02) : 149 - 153

[22] DIFFERENCES IN DURATION OF PREGNANCY - NEGRO AND WHITE WOMEN OF LOW SOCIOECONOMIC CLASS [J]. ARCHIVES OF ENVIRONMENTAL HEALTH, 1967, 14 (06): : 904 - +

[23] Hoffman H J, 1974, Obstet Gynecol Surv, V29, P651, DOI 10.1097/00006254-197409000-00029

[24] HOFFMAN HJ, 1978, TWIN RES BIOL EPIDEM, P133

[25] HOFFMAN HJ, 1984, PERINATAL EPIDEMIOLO, P491

[26] KALTREIDER F, 1980, CLIN OBSTET GYNECOL, V23, P17

[27] RISK OF PRE-TERM DELIVERY IN PATIENTS WITH PREVIOUS PRE-TERM DELIVERY AND-OR ABORTION [J]. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1978, 85 (02): : 81 - 85

[28] KELLEY HJ, 1974, INFANT MORTALITY MIN

[29] INFANTS BORN BEFORE 29 WEEKS GESTATION - SURVIVAL AND MORBIDITY AT 2 YEARS OF AGE [J]. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1982, 89 (11): : 887 - 891

[30] LUNDE A, DHHS PHS801358 NAT C

[21] SPONTANEOUS-ABORTIONS BY OCCUPATION AND SOCIAL-CLASS IN FINLAND [J]. INTERNATIONAL JOURNAL OF EPIDEMIOLOGY, 1980, 9 (02) : 149 - 153

[22] DIFFERENCES IN DURATION OF PREGNANCY - NEGRO AND WHITE WOMEN OF LOW SOCIOECONOMIC CLASS [J]. ARCHIVES OF ENVIRONMENTAL HEALTH, 1967, 14 (06): : 904 - +

[23] Hoffman H J, 1974, Obstet Gynecol Surv, V29, P651, DOI 10.1097/00006254-197409000-00029

[24] HOFFMAN HJ, 1978, TWIN RES BIOL EPIDEM, P133

[25] HOFFMAN HJ, 1984, PERINATAL EPIDEMIOLO, P491

[26] KALTREIDER F, 1980, CLIN OBSTET GYNECOL, V23, P17

[27] RISK OF PRE-TERM DELIVERY IN PATIENTS WITH PREVIOUS PRE-TERM DELIVERY AND-OR ABORTION [J]. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1978, 85 (02): : 81 - 85

[28] KELLEY HJ, 1974, INFANT MORTALITY MIN

[29] INFANTS BORN BEFORE 29 WEEKS GESTATION - SURVIVAL AND MORBIDITY AT 2 YEARS OF AGE [J]. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1982, 89 (11): : 887 - 891

[30] LUNDE A, DHHS PHS801358 NAT C