Acknowledgements
We wish to thank Sujaya Parthasarathy for assistance in study design, and Hannah Jang, Courtney Ellis, and Gina Smith-Anderson for assistance in project management. We thank Gary Zin, Nancy Facher, and Nicholas Shapiro at The Permanente Medical Group Consulting Services for technical assistance; and the clinic staff at the Kaiser Permanente HIV primary care clinics in Oakland, Sacramento, and San Francisco.