uses only the appearance of mucus at the vulva, determined by the woman herself on the basis of a sensation of wetness and the color and elasticity of the secretion, to ascertain the time of ovulation
uses only the appearance of mucus at the vulva, determined by the woman herself on the basis of a sensation of wetness and the color and elasticity of the secretion, to ascertain the time of ovulation
affects the hormonal balance of the mother and seems to be intended by nature to space human births <=> breast-feeding
uses only the appearance of mucus at the vulva, determined by the woman herself on the basis of a sensation of wetness and the color and elasticity of the secretion, to ascertain the time of ovulation
depends on the regularity of a woman's menstrual cycle to estimate time of ovulation <=> calendar rhythm method
uses only the appearance of mucus at the vulva, determined by the woman herself on the basis of a sensation of wetness and the color and elasticity of the secretion, to ascertain the time of ovulation
uses several criteria for determining the time of ovulation: changes in cervical mucus, changes in the position and softness of the cervix and the dilation of its opening, and a shift in temperature <=> sympto-thermal method
uses only the appearance of mucus at the vulva, determined by the woman herself on the basis of a sensation of wetness and the color and elasticity of the secretion, to ascertain the time of ovulation
uses only the appearance of mucus at the vulva, determined by the woman herself on the basis of a sensation of wetness and the color and elasticity of the secretion, to ascertain the time of ovulation <=> ovulation or Billings method