SIMPSON, JL. (1995). PREGNANCY AND THE TIMING OF INTERCOURSE
.
NEW ENGLAND JOURNAL OF MEDICINE, 333(23), 1563-1565. 10.1056/NEJM199512073332311
SIMPSON, JL. (1995). PREGNANCY AND THE TIMING OF INTERCOURSE
. NEW ENGLAND JOURNAL OF MEDICINE, 333(23), 1563-1565. 10.1056/NEJM199512073332311