[1] Univ Texas, Hlth Sci Ctr, Dept Surg, San Antonio, TX 78229 USA
[2] Univ Texas, Hlth Sci Ctr, Dept Epidemiol & Biostat, San Antonio, TX 78229 USA
[3] Univ Texas, Hlth Sci Ctr, Dept Pathol, San Antonio, TX 78229 USA
[4] Univ Texas, Hlth Sci Ctr, Dept Periodont, San Antonio, TX 78229 USA
[5] Univ Texas, Hlth Sci Ctr, Dept Med, San Antonio, TX 78229 USA
[6] Univ Texas, Hlth Sci Ctr, Sam & Ann Barshop Inst Longev & Aging Studies, San Antonio, TX 78229 USA
[7] Prot Design Labs, Fremont, CA USA
[8] S Texas Vet Hlth Care Syst, San Antonio, TX USA