Aperiodmorethansevendaysadvancedisreferredtoasashortenedmenstrualcycle.Inseverecases,theremaybetwoperiodseverymonth.Aperiodthatisadvancedthreetofivedayswithoutanyaccompanyingsymptomsandsignsisconsiderednormal;soisanoccasionallyshortenedcyele.Thediseaseisd (共 3205 字) [阅读本文] >>