1Department of Pulmonary and Critical Care Medicine, Naval Medical Center San Diego, San Diego, CA 92134, USA, E-mail: carolyn_h@gmail.com
2Denver Veterans Affairs Medical Center, Denver, Colorado, USA, E-mail: carolyn_h@gmail.com
*Corresponding Author:
Gilbert Seda, Department of Pulmonary and Critical Care Medicine, Naval Medical Center San Diego, San Diego, CA 92134, USA Email: