[Premature infants of unmarried professional women].
D005191:Family Characteristics; D005260:Female; D005859:Germany, East; D006801:Humans; D006814:Hungary; D007086:Illegitimacy; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D012907:Smoking
Uber Frühgeburten alleinstehender berufstätiger Frauen.