Menstrual history: authors' reply.
Hutchon
D J
DJ
Kearney
C E
CE
D005260:Female; D006801:Humans; D016347:Medical Records Systems, Computerized; D008597:Menstrual Cycle / Q000502:physiology*; D011247:Pregnancy; D011264:Pregnancy Trimesters; D012680:Sensitivity and Specificity; D018608:Ultrasonography, Doppler / Q000379:methods*