[1] Penn State Univ, Div Pulm Allergy & Crit Care Med, Coll Med, Hershey, PA USA
[2] Javeriana Univ, Dept Elect Engn, Bogota, Colombia
[3] Penn State Univ, Div Pediat Pulm Med, Coll Med, Hershey, PA USA
[4] Penn State Univ, Coll Med, Penn State Sleep Res & Treatment Ctr, Hershey, PA USA