Mothers of mongoloid infants in the collaborative project.
D000014:Abnormalities, Drug-Induced; D000367:Age Factors; D001722:Birth Order; D001724:Birth Weight; D044383:Black People; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D009929:Organ Size; D010298:Parity; D010920:Placenta; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D011627:Puberty; D044469:Racial Groups; D011831:Radiation Genetics; D011878:Radiotherapy / Q000009:adverse effects; D012744:Sex Ratio; D013997:Time Factors; D044465:White People