[1] Univ Washington, Seattle, WA USA
[2] Duke Clin Res Inst, Durham, NC USA
[3] Cleveland Clin, Cleveland, OH USA
[4] Yale Sch Med, New Haven, CT USA
[5] Boehringer Ingelheim Pharmaceut Inc, Ridgefield, CT USA
[6] Duke Clin Res Inst, Durham, NC USA
[7] Duke Univ, Med Ctr, Durham, NC USA