Influence of passive smoking and parental phlegm on pneumonia and bronchitis in early childhood.
D000328:Adult; D001724:Birth Weight; D001991:Bronchitis / Q000453:epidemiology / Q000209:etiology*; D002675:Child, Preschool; D004781:Environmental Exposure; D005191:Family Characteristics; D005260:Female; D005500:Follow-Up Studies; D006306:Health Surveys; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008131:London; D008297:Male; D011014:Pneumonia / Q000453:epidemiology / Q000209:etiology*; D012140:Respiratory Tract Diseases / Q000235:genetics*; D012621:Seasons; D012907:Smoking / Q000150:complications*; D013183:Sputum; D011795:Surveys and Questionnaires