Waller, DK, Sweeney, AM. (1996). Pregnancy and the timing of intercourse.
. NEW ENGLAND JOURNAL OF MEDICINE, 334(19), 1266. 10.1056/nejm199605093341911
Waller, DK, Sweeney, AM. (1996). Pregnancy and the timing of intercourse.
. NEW ENGLAND JOURNAL OF MEDICINE, 334(19), 1266. 10.1056/nejm199605093341911