1 Division of Respiratory Care, Department of Cardiopulmonary Sciences, Rush University Medical Center, Chicago, Illinois.
2 Division of Pulmonary and Critical Care, Department of Medicine, Rush University Medical Center, Chicago, Illinois.
3 The Iowa Clinic P.C. and Unity Point Health-Des Moines, Des Moines, Iowa.
4 Department of Respiratory Care, Unity Point Health-Des Moines, Des Moines, Iowa, when the study was conducted, she currently works for Fisher and Paykel Ltd.
5 Drs Pulmonary and Critical Care Medicine Division, Texas A&M School of Medicine, Baylor University Medical Center, Dallas, Texas.
6 Division of Respiratory Care, Department of Cardiopulmonary Sciences, Rush University Medical Center, Chicago, Illinois. [email protected].