title: Asymptomatic pulmonary atelectasis in drug addicts.
mesh_terms: D000328:Adult; D005260:Female; D003932:Heroin / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D001261:Pulmonary Atelectasis / Q000139:chemically induced* / Q000000981:diagnostic imaging; D011859:Radiography; D012119:Respiration / Q000187:drug effects; D019966:Substance-Related Disorders
chemical_list: D003932:Heroin