Award-winning author, David Cornish, MD, FACP, AGAF , is a gastroenterologist with the nation's largest medical group, The Permanente Medical Group. He lives with his family and practices medicine in California's Great Central Valley. He is both Chief of Medicine Emeritus, and Chief of Gastroenterology Emeritus. Dr. Cornish's other books include the novel 1918: The Great Pandemic , and non-fiction books Evidence in Service: An Evidence-Based Literature Review of Service and Satisfaction in Health Care , and Essential 20: Twenty Components of an Excellent Health Care Team . Davidcornishbooks.com.