title: The acquired immunodeficiency syndrome: a discussion of etiologic hypotheses.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology* / Q000382:microbiology / Q000635:transmission; D003586:Cytomegalovirus Infections / Q000150:complications; D005260:Female; D006205:Haiti / Q000208:ethnology; D004854:Herpesvirus 4, Human / Q000276:immunology; D006716:Homosexuality; D006801:Humans; D008297:Male; D012306:Risk; D019966:Substance-Related Disorders / Q000150:complications; D065227:Transfusion Reaction