The Alternative Birth Center movement in the San Francisco and Bay area.
D002140:California; D036861:Delivery, Obstetric; D005190:Family; D005260:Female; D006699:Home Care Services; D006748:Hospital Departments / Q000639:trends*; D006757:Hospital Units; D006801:Humans; D008297:Male; D009321:Natural Childbirth; D009721:Nurse Midwives; D009775:Obstetrics and Gynecology Department, Hospital / Q000458:organization & administration / Q000639:trends*; D011247:Pregnancy; D012306:Risk