Variations in number of births and perinatal mortality by day of week.
D036861:Delivery, Obstetric; D005194:Family Practice; D005260:Female; D005313:Fetal Death; D006757:Hospital Units / Q000706:statistics & numerical data*; D006801:Humans; D007226:Infant Mortality; D007743:Labor, Obstetric; D009775:Obstetrics and Gynecology Department, Hospital / Q000458:organization & administration; D011247:Pregnancy; D006113:United Kingdom