[1] Univ Utah, Sch Med, Salt Lake City, UT USA
[2] Univ Calif San Francisco, Dept Dermatol, San Francisco, CA USA
[3] Univ Arizona, Coll Med, Phoenix, AZ USA
[4] Univ Utah, Coll Nursing, Salt Lake City, UT USA
[5] Univ Utah, Div Geriatr, Salt Lake City, UT USA