1. Charles R. Drew University of Medicine and Science, Los Angeles, California.
2. David Geffen School of Medicine at UCLA, Los Angeles, California.
3. VA Greater Los Angeles Healthcare System (Geriatric Research, Education, and Clinical Center), Los Angeles, California.
4. St. John's Community Health, Los Angeles, California.
5. The Institute for Sexual and Gender Minority Health and Wellbeing, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
6. Alameda County Public Health Department, San Leandro, California.
7. George Washington University, Washington, D.C.