Hatherley L I
Clin Reprod Fertil. 1985 Mar;3(1):73-80.
Luteal phase abnormalities in early menstrual cycles after pregnancy have been shown to cause confusion in the practice of natural family planning (NFP) for some patients and to restrict severely the number of late infertile days available to others. The cause of the abnormalities is uncertain but appears to be related to the nursing status of the patient.
妊娠后早期月经周期的黄体期异常已被证明会使一些患者在自然计划生育（NFP）实践中感到困惑，并严重限制另一些患者可利用的晚期不孕天数。异常的原因尚不确定，但似乎与患者的哺乳状况有关。
