title: Plasma theophylline levels in asthmatic children in Singapore. A preliminary study.
mesh_terms: D000284:Administration, Oral; D000628:Aminophylline / Q000008:administration & dosage; D001249:Asthma / Q000097:blood; D001993:Bronchodilator Agents / Q000008:administration & dosage; D002648:Child; D002675:Child, Preschool; D002794:Choline / Q000008:administration & dosage / Q000031:analogs & derivatives; D006801:Humans; D007275:Injections, Intravenous; D012846:Singapore; D013806:Theophylline / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000097:blood*
chemical_list: D001993:Bronchodilator Agents; D000628:Aminophylline; C012839:cholinophyllin; D013806:Theophylline; D002794:Choline