共 13 条
[2]
DRAGE JS, 1969, 185 PAN AM HLTH ORG, P222
[3]
EASTMAN N J, 1962, Obstet Gynecol Surv, V17, P459, DOI 10.1097/00006254-196208000-00001
[5]
GOODLIN RC, 1974, OBSTET GYNECOL, V43, P474
[6]
HON EH, 1969, OBSTET GYNECOL, V33, P237
[7]
KEITH HM, 1960, PEDIATRICS, V26, P616
[8]
LILIENFELD AM, 1951, AM J HYG, V53, P262
[10]
MYERS RE, 1978, COMMUNICATION