Affiliation: | 1. Department of Medicine, Pulmonary and Critical Care, Loma Linda University, Loma Linda, CA, USA;2. Department of Medicine, Critical Care, Loma Linda University, Loma Linda, CA, USA;3. Department of Medicine, Loma Linda University, Loma Linda, CA, USA;4. Department of Emergency Medicine, Loma Linda University, Loma Linda, CA, USA |