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Heather is a physician specializing in internal medicine, pulmonary medicine and critical care at the Hospital of the University of Pennsylvania, Penn Presbyterian Medical Center.
Christopher is a physician specializing in internal medicine, pulmonary medicine, and critical care medicine at Massachusetts General Hospital, and a public health researcher on the faculty of Harvard Medical School.
Marilynn is a National Certified School Nurse for Chicago Public Schools and a Family Nurse Practitioner.
Peter is a physician specializing in pulmonary and critical care medicine at Yale. His research has focused on health policy with a particular interest in the impact of utility service and the natural environment on health outcomes.
Vivek is the Allen I. Hyman Professor of Critical Care Anesthesiology and Division Chief of Critical Care Medicine in the Department of Anesthesiology at Columbia University, College of Physicians and Surgeons. He describes himself as a work in progress.