The ovulation method--vulvar observations as an index of fertility/infertility

Obstet Gynecol. 1979 Jan;53(1):12-22.
No abstract available

MeSH terms

  • Cervix Mucus
  • Female
  • Fertility*
  • Humans
  • Infertility, Female / diagnosis*
  • Menstruation
  • Models, Biological
  • Natural Family Planning Methods*
  • Ovulation
  • Vulva*