[1] White River Junct VA Med Ctr, White River Jct, VT USA
[2] Dartmouth Coll, Dept Med, Geisel Sch Med, Hanover, NH USA
[3] VA Puget Sound Hlth Care Syst, Seattle, WA USA
[4] Univ Washington, Sch Med, Dept Med, Seattle, WA USA
[5] Washington DC VA Med Ctr, Washington, DC USA
[6] George Washington Univ, Dept Med, Sch Med, Washington, DC USA
[7] Lexington VA Hlth Care Syst, Lexington, KY USA
[8] Univ Kentucky, Coll Med, Dept Internal Med, Lexington, KY USA
[9] VA Portland Hlth Care Syst, Portland, OR USA
[10] Oregon Hlth & Sci Univ, Dept Med, Portland, OR USA
[11] Omaha VA Med Ctr, Omaha, NE USA
[12] Univ Nebraska, Coll Med, Dept Internal Med, Omaha, NE USA
[13] San Diego VA Med Ctr, San Diego, CA USA
[14] Univ Calif San Diego, Sch Med, Dept Med, San Diego, CA USA
[15] VA Eastern Colorado Hlth Care Syst, Aurora, CO USA
[16] Univ Colorado, Sch Med, Dept Med, Aurora, CO USA
[17] Southeast Louisiana Vet Hlth Care Syst, New Orleans, LA USA
[18] Tulane Univ, Sch Med, New Orleans, LA USA
[19] VA Pittsburgh Healthcare Syst, Pittsburgh, PA USA
[20] Univ Pittsburgh, Sch Med, Dept Med, Pittsburgh, PA USA
[21] VA Palo Alto Hlth Care Syst, Palo Alto, CA USA
[22] Stanford Univ, Sch Med, Stanford, CA USA
[23] Durham VA Hlth Care Syst, Durham, NC USA
[24] Duke Univ, Sch Med, Dept Med, Durham, NC USA
[25] VA Connecticut Hlth Care Syst, West Haven, CT USA
[26] Yale Univ, Sch Med, Dept Med, New Haven, CT USA
[27] White River Junct VA Med Ctr, 215 N Main St, White River Jct, VT 05009 USA