Outcome of pregnancy in users of natural family planning.
Kambic
R
R
Johns Hopkins School of Hygiene and Public Health, Baltimore.
Gray
R H
RH
Simpson
J L
JL
D000818:Animals; D005193:Family Planning Services / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010063:Ovum / Q000502:physiology; D011247:Pregnancy; D011256:Pregnancy Outcome; D013094:Spermatozoa / Q000502:physiology