1. Nancy Munro is Senior Acute Care Nurse Practitioner, National Institutes of Health, Critical Care Medicine Department/Pulmonary Consult Service, 10 Center Dr, Bldg 10-CRC, Room 3-3677, Bethesda, MD 20892 (). Margaret Ruggiero is Acute Care Nurse Practitioner, National Institutes of Health, Critical Care Medicine Department/Pulmonary Consult Service, Bethesda, Maryland