[Duration of pregnancy and the ABO and Rh blood groups].
D000017:ABO Blood-Group System; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008598:Menstruation; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System
Czas trwania ciazy a układ ABO i Rh krwi.