[1] Emory Univ, Dept Med, Div Geriatr & Gerontol, Atlanta, GA 30329 USA
[2] Atlanta Geriatr Res Educ & Clin Ctr, Dept Vet Affairs Birmingham, Birmingham, AL USA
[3] Atlanta Geriatr Res Educ & Clin Ctr, Dept Vet Affairs Birmingham, Atlanta, GA USA
[4] Univ Alabama Birmingham, Dept Med, Div Gerontol Geriatr & Palliat Care, Birmingham, AL 35294 USA
[5] Univ Calif San Francisco, Dept Med, San Francisco, CA 94115 USA
[6] Univ Calif Los Angeles, Dept Med, Los Angeles, CA 90095 USA
[7] Geriatr Res Educ & Clin Ctr, Los Angeles, CA 90073 USA
[8] Vet Affairs Greater Los Angeles Healthcare Syst, Los Angeles, CA 90073 USA
[9] Emory Univ, Sch Med, Sleep Program, Atlanta, GA 30329 USA
[10] Emory Univ, Dept Med, Div Gen Internal Med, Atlanta, GA 30329 USA
[11] Emory Univ, Dept Family & Prevent Med, Atlanta, GA 30329 USA