title: Regional perinatal centers in Maryland: Status of an emerging concept.
mesh_terms: D002662:Child Health Services; D003191:Comprehensive Health Care; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000628:therapy*; D008396:Maryland; D008427:Maternal Health Services; D011247:Pregnancy