Before revision: Obstetric hospitalist programs throughout the country have taken various forms, including programs where physicians on the medical staff voluntarily take 12 or 24 hour shifts to provide continuous coverage for their labor and delivery unit.
After revision: Obstetric hospitalist programs throughout the country have taken various forms, including programs where physicians on the medical staff voluntarily take 12- or 24-hour shifts to provide continuous coverage for their labor and delivery unit.