[Current status and keypoints in maternal health services in relation to statistics on premature births - public health nursing's role in utilization of needed medical care by patients].
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007564:Japan; D008427:Maternal Health Services / Q000706:statistics & numerical data; D011247:Pregnancy; D011637:Public Health Nursing; D013223:Statistics as Topic