[1] Baylor Coll Med, Dept Pulm, Houston, TX 77030 USA
[2] Baylor Coll Med, Dept Crit Care Med, Houston, TX 77030 USA
[3] Christus Spohn Hlth Syst, Dept Innovat & Res, Corpus Christi, TX USA
[4] Baylor Coll Med, Dept Pulm & Crit Care Med, Houston, TX 77030 USA
[5] Texas A&M Univ, Sect Pulm Crit Care & Sleep Med, Dept Med, College Stn, TX 77843 USA