[1] Univ Utah, Sch Med, Salt Lake City, UT 84112 USA
[2] VA Salt Lake City Geriatr Res Educ & Clin Ctr, Salt Lake City, UT USA
[3] Univ Calif San Francisco, San Francisco, CA 94143 USA
[4] San Francisco VA Med Ctr, San Francisco, CA USA
[5] Roseman Univ Hlth Sci, 2963 Kedleston St, Las Vegas, NV 89135 USA
[6] Univ Texas Southwestern Med Ctr Dallas, 5323 Harry Hines Blvd, Dallas, TX 75390 USA
[7] Baylor Coll Med, Houston, TX 77030 USA
[8] Michael E DeBakey VA Med Ctr, Houston, TX USA
[9] Indiana Univ, 1101 West 10th St, Indianapolis, IN 46202 USA
[10] Christiana Care Hlth Syst, N 1400 Washington St,Suite 327, Wilmington, DE 19801 USA
[11] Univ Michigan, Ann Arbor, MI 48109 USA
[12] VA Ann Arbor Healthcare Syst, Ann Arbor, MI USA
[13] VITAS Hosp Care Healthcare, Gotha, FL USA
[14] Univ Cent Florida, Gotha, FL USA
[15] Univ Utah, Sch Med, VA Salt Lake City Geriatr Res Educ & Clin Ctr, 30 N 1900 E,AB 193 SOM, Salt Lake City, UT 84132 USA
[16] Univ Calif San Francisco, San Francisco VA Med Ctr, NHCU, SFVAMC Bldg 208, San Francisco, CA 94121 USA
[17] Michael E DeBakey VA Med Ctr, 2002 Holcombe 152, Houston, TX 77030 USA
[18] Baylor Coll Med, 2002 Holcombe 152, Houston, TX 77030 USA
[19] Michael E DeBakey VA Med Ctr, 1 Baylor Plz,MS230, Houston, TX 77030 USA
[20] Baylor Coll Med, 1 Baylor Plz,MS230, Houston, TX 77030 USA
[21] Univ Michigan, VA Ann Arbor Healthcare Syst, 2215 Fuller Rd,GRECC 11G, Ann Arbor, MI 48105 USA
[22] Univ Cent Florida, VITAS Healthcare, Volunteer Fac, 9616 Lake Hugh Dr, Gotha, FL 34734 USA
[23] Univ Cent Florida, Med, 9616 Lake Hugh Dr, Gotha, FL 34734 USA