1. J. K. Wong, M. Hezareh, H. F. Günthard, C. C. Ignacio, C. A. Spina, Departments of Medicine and Pathology, University of California, San Diego, School of Medicine, 9500 Gilman Drive, La Jolla, CA 92093, USA.
2. D. V. Havlir, Departments of Medicine and Pathology, University of California, San Diego, School of Medicine, 9500 GIlman Drive, La Jolla, CA 92093, USA, and Treatment Center, University of California, San Diego, 2760 Fifth Avenue, Suite 300, San Diego, CA 92103, USA.
3. D. D. Richman, Departments of Medicine and Pathology, University of California, San Diego, School of Medicine, 9500 Gilman Drive, La Jolla, CA 92093, USA, and Veterans Affairs San Diego Healthcare System, San Diego, CA 92063, USA.