The ovulation method--vulvar observations as an index of fertility/infertility
Obstet Gynecol
.
1979 Jan;53(1):12-22.
Authors
T W Hilgers
,
A M Prebil
PMID:
760010
No abstract available
MeSH terms
Cervix Mucus
Female
Fertility*
Humans
Infertility, Female / diagnosis*
Menstruation
Models, Biological
Natural Family Planning Methods*
Ovulation
Vulva*