[1] Univ Pittsburgh, Med Ctr, Dept Surg, Pittsburgh, PA USA
[2] Univ Pittsburgh, Med Ctr, Dept Cell Biol, Pittsburgh, PA USA
[3] Oklahoma Med Res Fdn, Cardiovasc Biol Res Program, Oklahoma City, OK 73104 USA
[4] Univ Oklahoma, Hlth Sci Ctr, Dept Pathol, Howard Hughes Med Inst, Oklahoma City, OK USA
[5] Univ Oklahoma, Hlth Sci Ctr, Dept Biochem & Mol Biol, Howard Hughes Med Inst, Oklahoma City, OK 73190 USA