Families in flats.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005190:Family; D005260:Female; D005860:Germany, West; D006306:Health Surveys; D006798:Housing; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D009497:Neurotic Disorders / Q000453:epidemiology; D011157:Population Dynamics; D012141:Respiratory Tract Infections / Q000453:epidemiology