[Social and working background of threatened pregnancies].
D000026:Abortion, Habitual / Q000209:etiology; D000328:Adult; D003604:Czechoslovakia; D004651:Employment; D004782:Environmental Health; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology*; D012959:Socioeconomic Factors
Sociální a pracovní pozadí ohrozených tĕhotenství.