title: Problems of classification of human immunodeficiency virus-seropositive pediatric patients.
authors.affiliation: Pediatric Department, University of Milan, Italy.
authors.forename: N
authors.initials: N
authors.lastname: Principi
authors.forename: P
authors.initials: P
authors.lastname: Marchisio
authors.forename: E
authors.initials: E
authors.lastname: Massironi
authors.forename: A
authors.initials: A
authors.lastname: D'Arminio Monforte
authors.forename: R
authors.initials: R
authors.lastname: Novati
authors.forename: M
authors.initials: M
authors.lastname: Moroni
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000145:classification*; D002487:Centers for Disease Control and Prevention, U.S.; D002675:Child, Preschool; D005500:Follow-Up Studies; D006679:HIV Seropositivity / Q000145:classification*; D006801:Humans; D007223:Infant; D007558:Italy; D014481:United States