title: Pneumocystis carinii and geographic clustering: evidence for transmission of infection.
authors.forename: J M
authors.initials: JM
authors.lastname: Beck
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000453:epidemiology / Q000635:transmission*; D016000:Cluster Analysis; D006801:Humans; D011020:Pneumonia, Pneumocystis / Q000453:epidemiology / Q000635:transmission*