title: Twinning and pediatric AIDS: alternative explanations.
authors.forename: N L
authors.initials: NL
authors.lastname: Segal
mesh_terms: D004200:Diseases in Twins / Q000453:epidemiology* / Q000209:etiology; D015658:HIV Infections / Q000453:epidemiology* / Q000209:etiology; D015497:HIV-1; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D014429:Twins, Dizygotic