1 Department of Social and Behavioral Sciences, Institute for Health and Aging, University of California, San Francisco, San Francisco, CA, United States of America. Erica.Sedlander@ucsf.edu.
2 Department of Community Medicine, College of Medicine, University of Ibadan, Ibadan, Nigeria.
3 Department of Social and Behavioral Sciences, Institute for Health and Aging, University of California, San Francisco, San Francisco, CA, United States of America.