1. Institute for Health & Aging, University of California San Francisco, San Francisco, CA, USA
2. School of Public Health, University of California Berkeley, Berkeley, CA, USA
3. On Lok Lifeways, San Francisco, CA, USA
4. Division of Geriatric Medicine, University of California San Francisco, San Francisco, CA, USA
5. Philip R. Lee Institute for Health Policy Studies, University of California San Francisco, San Francisco, CA, USA