Robert M. Wachter, MD is Professor and Chair of the Department of Medicine at UCSF, where he is the Holly Smith Distinguished Professor in Science and Medicine and the Benioff Endowed Chair in Hospital Medicine. He coined the term “hospitalist” in 1996 . In 2015, Modern Healthcare magazine named him the most influential physician-executive in the United States. Prior to becoming UCSF's ninth chair of medicine, he served as chief of UCSF's Division of Hospital Medicine. He is generally regarded as the academic leader of the hospitalist movement. Hospitalists are internists and other physicians who specialize in the care of hospitalized patients. He is a past president of the Society of Hospital Medicine and a past chair of the American Board of Internal Medicine. In January 2021, Wachter began guest-hosting the In the Bubble podcast. You can follow Bob on twitter.Patricia C Henwood MD is an Associate Professor of Emergency Medicine at Thomas Jefferson in Philadelphia. She has been leading and organizing the coronavirus response on the front lines at Jefferson and in the city of Philadelphia. Trish's experience training clinicians in Rwanda, Uganda, and other countries to use point-of-care ultrasound to answer questions about TB, and Ebola has prepared her more than most on how to handle a crisis. Trish is a graduate of the Harvard Affiliated Emergency Medicine program. During her time as a resident she founded a 401(c)3 organization PURE: Point-of-care Ultrasound in Resource limited Environments. PURE is an organization comprised of medical professionals and others dedicated to enhancing ultrasound education and use in the developing world. PURE works in concert with ministries of health and local leaders in education to develop tailored plans to train physicians and other healthcare practitioners to use ultrasound at the bedside in caring for their patients, as well as help them develop the tools to sustainably transfer ultrasound skills to other healthcare practitioners in their setting. In a 2019 NEJM perspective piece, Trish published her never before described ultrasound findings diagnostic of Ebola patients in Liberia. Follow Trish on twitter.