Walter Cook, MD, is an award-winning pediatrician and Assistant Professor of Pediatrics at the Mayo Clinic's College of Medicine in Rochester, Minnesota, where he focuses on community pediatric and adolescent medicine research. He is the present course director for Mayo Clinic Pediatric Days, Mayo Clinic Summer Pediatric Review, and the Rochester-Mayo Clinic T. Denny Sanford Pediatric Symposium. As a father of three, including twins, Dr. Cook has placed a special emphasis on providing exceptional care for thousands of infants and children for more than 25 years, and has been recognized as a Best Doctor in America by Minneapolis/St. Paul Business Journal. Kelsey Klaas, MD, is a pediatrician in the division of General Pediatric and Adolescent Medicine at Mayo Clinic Children's Center in Rochester, Minnesota. She currently serves as the associate pediatric clerkship director for the Mayo Clinic Alix School of Medicine and as an advisor for the Mayo Medical School Advisory Program. Dr. Klaas's practice focuses on children with complex health conditions, like dysautonomia, POTS, neurodevelopmental disorders, and types of genetic disorders. She lives in Rochester, Minnesota with her husband and two young children.