[1] Univ Calif San Francisco, Sch Nursing, Inst Hlth & Aging, 3333 Calif St,Suite 340 San, San Francisco, CA 94118 USA
[2] Univ Iowa, Coll Publ Hlth, Dept Community & Behav Hlth, Iowa City, IA USA
[3] Univ Calif San Francisco, Sch Pharm, Dept Clin Pharm, San Francisco, CA USA
[4] Univ Calif San Francisco, Ctr Tobacco Control Res & Educ, San Francisco, CA 94118 USA