1. Division of Infectious Diseases, Department of Medicine, University of Southern California Keck School of Medicine, Los Angeles, California.
2. Department of Family Medicine and Public Health, University of California at San Diego, San Diego, California.
3. University of Southern California School of Pharmacy, Los Angeles, California.
4. University of California at San Francisco, San Francisco, California.
5. Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
6. Division of HIV Medicine, Harbor-UCLA Medical Center, Torrance, California.