Point-of-care ultrasound / Nilam J. Soni, MD, MS, Professor of Medicine, Division of General & Hospital Medicine and DIvision of Pulmonary & Critical Care Medicine, University of Texas Health San Antonio, Texas, Robert Arntfield, MD, FRCPC, Associate Professor of Medicine, Division of Emergency Medicine and Division of Critical Care Medicine, Schulich School of Medicine & Dentistry, Western University, London Health Sciences Centre, London, Ontario, Canada, Pierre Kory, MD, MPA, Associate Professor of Medicine, Division of Allergy, Pulmonary, and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.