Midwifery service at Boston City Hospital.
D001900:Boston; D006748:Hospital Departments / Q000458:organization & administration*; D006801:Humans; D009721:Nurse Midwives / Q000191:economics / Q000458:organization & administration*; D009775:Obstetrics and Gynecology Department, Hospital / Q000191:economics / Q000458:organization & administration*