[1] NIH, Bethesda, MD 20892 USA
[2] Ctr Dis Control & Prevent, Atlanta, GA USA
[3] Univ Washington, Seattle, WA 98195 USA
[4] Univ Arizona, Tucson, AZ USA
[5] Johns Hopkins Univ, Baltimore, MD USA
[6] Natl Assoc People AIDS, Washington, DC USA
[7] Forum Collaborat HIV Res, Washington, DC USA
[8] Univ Colorado, Hlth Sci Ctr, Denver, CO USA
[9] Univ Calif San Diego, La Jolla, CA 92093 USA
[10] Harvard Univ, Med Ctr, Boston, MA 02115 USA
[11] Univ Calif Los Angeles, Med Ctr, Los Angeles, CA 90024 USA
[12] US Dept Vet Affairs, Washington, DC USA
[13] Univ Calif San Francisco, Mt Zion Med Ctr, San Francisco, CA 94120 USA
[14] Harlem Hosp Med Ctr, New York, NY USA
[15] Holmes Hosp, Cincinnati, OH USA
[16] Boston Univ, Sch Med, Boston, MA 02118 USA
[17] Univ Hosp Bern, CH-3010 Bern, Switzerland
[18] Univ Alabama Birmingham, Birmingham, AL USA
[19] US FDA, Rockville, MD 20857 USA
[20] Harvard Univ, Sch Publ Hlth, Boston, MA 02115 USA
[21] US Dept Hlth & Human Serv, Washington, DC USA
[22] Hackensack Med Ctr, Hackensack, NJ 07604 USA
[23] Univ Washington, Harborview Med Ctr, Seattle, WA 98104 USA
[24] Vet Adm Med Ctr, Minneapolis, MN 55417 USA
[25] Univ Washington, Seattle, WA 98195 USA
[26] Hop Bichat Claude Bernard, F-75877 Paris 18, France
[27] Hosp Univ Gregorio Maranon, Madrid, Spain
[28] Treatment Act Grp, New York, NY USA
[29] Henry Ford Hosp, Detroit, MI 48202 USA
[30] Kaiser Permanente, Springfield, VA USA
[31] St Pauls Hosp, Vancouver, BC V6Z 1Y6, Canada
[32] Univ Minnesota, Minneapolis, MN USA
[33] US Hlth Resources & Serv Adm, Rockville, MD 20857 USA
[34] Northwestern Univ, Chicago, IL 60611 USA
[35] Johns Hopkins Univ Hosp, Baltimore, MD 21287 USA
[36] Univ Amsterdam, Amsterdam, Netherlands
[37] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[38] Natl Fdn Infect Dis, Indianapolis, IN USA
[39] Tulane Univ, Sch Med, New Orleans, LA 70112 USA
[40] Indiana Univ, Sch Med, Indianapolis, IN USA
[41] Columbia Univ Coll Phys & Surg, New York, NY 10032 USA