title: Concerning the article by de Carvalho Bittencourt et al.: Value of HIV patients with regular follow-up as in-house internal controls of flow cytometry measurement of lymphocyte subsets.
authors.forename: Gerald E
authors.initials: GE
authors.lastname: Marti
authors.forename: Frank
authors.initials: F
authors.lastname: Mandy
authors.forename: Thomas
authors.initials: T
authors.lastname: Denny
authors.forename: Frederic I
authors.initials: FI
authors.lastname: Preffer
mesh_terms: D015496:CD4-Positive T-Lymphocytes / Q000166:cytology*; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology*; D005260:Female; D005434:Flow Cytometry / Q000379:methods*; D015658:HIV Infections / Q000097:blood*; D006801:Humans; D008297:Male