[1] Univ Texas, Hlth Sci Ctr, Dept Mol Med, San Antonio, TX 78245 USA
[2] Univ Texas, Hlth Sci Ctr, Dept Physiol, San Antonio, TX 78245 USA
[3] Univ Texas, Hlth Sci Ctr, Barshop Ctr Longev & Aging Studies, San Antonio, TX 78245 USA
[4] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA
[5] Buck Inst Age Res, Novato, CA USA
[6] Erasmus Univ, Dept Cell Biol & Genet, CBG, NL-3000 DR Rotterdam, Netherlands
[7] Natl Inst Publ Hlth & Environm, NL-3720 BA Bilthoven, Netherlands
[8] S Texas Vet Hlth Care Syst, Ctr Geriatr Res Educ & Clin, San Antonio, TX 78229 USA