[1] San Francisco State Univ, Coll Hlth & Social Sci, Dept Hlth Educ, San Francisco, CA 94132 USA
[2] Brigham & Womens Hosp, Div Gen Internal Med & Primary Care, 75 Francis St, Boston, MA 02115 USA
[3] San Francisco State Univ, Dept Hlth Educ, San Francisco, CA 94132 USA