共 42 条
[12]
BROOK RH, 1977, MED CARE, V15, P1
[13]
*BUR CENS, 1973, CENS POP PHCE2
[14]
INFLUENCE OF WEIGHT AND GESTATION ON PERINATAL AND NEONATAL-MORTALITY BY ETHIC GROUP
[J].
AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH,
1964, 54 (11)
:1841-1855
[16]
Finney D.J, 1952, PROBIT ANAL
[19]
GESTATIONAL INTERVAL FROM VITAL RECORDS
[J].
AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH,
1970, 60 (08)
:1496-&
[20]
Hoffman H J, 1974, Obstet Gynecol Surv, V29, P651, DOI 10.1097/00006254-197409000-00029