By Robert L. Wilkins, PhD, RRT, FAARC, Chair and Professor, Department of Respiratory Care, School of Allied Health Sciences, University of Texas Health Science Center at San Antonio, San Antonio, TX; and Stephen F. Wehrman, RRT, RPFT, AE-C, Professor/Program Director, Respiratory Care Program, Kapi'olani Community College, University of Hawaii, Honolulu, HI |