Level 2 hospitals and regionalized perinatal care.
D006761:Hospitals / Q000592:standards*; D006771:Hospitals, Maternity / Q000592:standards*; D006780:Hospitals, Rural / Q000592:standards*; D006782:Hospitals, Special / Q000592:standards*; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D013677:Medical Laboratory Science