© Copyright 2014, Bob Demers, RRT*, all rights reserved. Permission is hereby granted to make an unlimited number of copies of this image for non-commercial purposes, provided that this copyright language is included as an integral component of the copied image(s).
*the acronym 'RRT' identifies the person to whom it applies as a Registered Respiratory Therapist. 'RRT' is a service mark registered in the United States of America by the National Board for Respiratory Care.
Contact Bob Demers here: bobdemers@aol.com