Comment on

• Unexplained opportunistic infections and CD4+ T-lymphocytopenia without HIV infection. An investigation of cases in the United States. The Centers for Disease Control Idiopathic CD4+ T-lymphocytopenia Task Force.

  Smith DK, Neal JJ, Holmberg SD. Smith DK, et al. N Engl J Med. 1993 Feb 11;328(6):373-9. doi: 10.1056/NEJM199302113280601. N Engl J Med. 1993. PMID: 8093633 Review.
• Idiopathic CD4+ T-lymphocytopenia--immunodeficiency without evidence of HIV infection.

  Ho DD, Cao Y, Zhu T, Farthing C, Wang N, Gu G, Schooley RT, Daar ES. Ho DD, et al. N Engl J Med. 1993 Feb 11;328(6):380-5. doi: 10.1056/NEJM199302113280602. N Engl J Med. 1993. PMID: 8093634
• Idiopathic CD4+ T-lymphocytopenia--an analysis of five patients with unexplained opportunistic infections.

  Spira TJ, Jones BM, Nicholson JK, Lal RB, Rowe T, Mawle AC, Lauter CB, Shulman JA, Monson RA. Spira TJ, et al. N Engl J Med. 1993 Feb 11;328(6):386-92. doi: 10.1056/NEJM199302113280603. N Engl J Med. 1993. PMID: 8093635
• Idiopathic CD4+ T-lymphocytopenia--four patients with opportunistic infections and no evidence of HIV infection.

  Duncan RA, von Reyn CF, Alliegro GM, Toossi Z, Sugar AM, Levitz SM. Duncan RA, et al. N Engl J Med. 1993 Feb 11;328(6):393-8. doi: 10.1056/NEJM199302113280604. N Engl J Med. 1993. PMID: 8093636
• Low CD4+ counts in a study of transfusion safety. The Transfusion Safety Study Group.

  Aledort LM, Operskalski EA, Dietrich SL, Koerper MA, Gjerset GF, Lusher JM, Lian EC, Mosley JW. Aledort LM, et al. N Engl J Med. 1993 Feb 11;328(6):441-2. doi: 10.1056/NEJM199302113280614. N Engl J Med. 1993. PMID: 8093638 No abstract available.
• CD4+ counts in seronegative homosexual men. The Multicenter AIDS Cohort Study.

  Vermund SH, Hoover DR, Chen K. Vermund SH, et al. N Engl J Med. 1993 Feb 11;328(6):442. doi: 10.1056/NEJM199302113280615. N Engl J Med. 1993. PMID: 8093639 No abstract available.