[Utilization of the system of registering premature infants for the purpose of providing them with special postnatal care].
D005260:Female; D006753:Hospital Records; D006801:Humans; D007224:Infant Care; D007231:Infant, Newborn; D007234:Infant, Premature; D007564:Japan; D008297:Male; D011181:Postnatal Care; D011247:Pregnancy; D012042:Registries