[1] Baylor Coll Med, Michael E DeBakey Dept Surg, Houston, TX 77030 USA
[2] Texas Heart Inst, Dept Cardiovasc Surg, Houston, TX 77025 USA
[3] Baylor Coll Med, Dept Med, Sect Hlth Serv Res, Houston, TX 77030 USA
[4] Michael E DeBakey VA Med Ctr, Ctr Innovat Qual Effectiveness & Safety IQuESt, Houston, TX USA
[5] Baylor Coll Med, Dept Pediat, Off Res Informat Technol, Houston, TX 77030 USA
[6] Baylor Coll Med, Dept Pediat, Res Resources Off, Houston, TX 77030 USA