[Present problems of premature birth. V. Premature birth and abortion].
D000028:Abortion, Induced / Q000706:statistics & numerical data*; D000022:Abortion, Spontaneous; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D019102:Infant, Very Low Birth Weight; D011247:Pregnancy; D047928:Premature Birth
ABORTION/statistics; INFANT, PREMATURE
Beiträge zum Frügheburtenproblem der Gegenwart. V. Frühgeburt und Abtreibung.