Aperioddelayedmorethansevendaysisreferredtoasaprolongedmenstrualcycle.Inseverecases,theremaybeonlyoneperiodintwomonths.Aperioddelayedthreetofivedayswithoutanyaccompanyingsymptomsandsigns,oranoccasionallyprolongedmenstrualcycle,isconsiderednormal.Thediseas (共 3774 字) [阅读本文] >>