[1] Shriners Hosp Children, Metab Unit, Galveston, TX 77550 USA
[2] Univ Texas Med Branch, Dept Surg, Galveston, TX 77555 USA
[3] Univ Texas Med Branch, Inst Translat Sci, Galveston, TX 77555 USA
[4] Univ Texas Med Branch, Rehabil Sci, Galveston, TX 77555 USA