title: Prospective study of epidemic delta infection in drug addicts.
mesh_terms: D000293:Adolescent; D000328:Adult; D003673:Defective Viruses; D005260:Female; D006509:Hepatitis B / Q000150:complications / Q000209:etiology; D006511:Hepatitis B Antigens / Q000032:analysis; D006513:Hepatitis B e Antigens / Q000032:analysis; D006518:Hepatitis Viruses; D035923:Hepatitis delta Antigens; D006525:Hepatitis, Viral, Human / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D008297:Male; D019966:Substance-Related Disorders / Q000150:complications*
chemical_list: D006511:Hepatitis B Antigens; D006513:Hepatitis B e Antigens; D035923:Hepatitis delta Antigens