Christopher Walker, MD is a Cardiothoracic Radiologist at Saint Luke’s Hospital of Kansas City and Assistant Professor, Department of Radiology at the University of Missouri-Kansas City School of Medicine. He is a co-author of Muller’s Imaging of the Chest, 2nd Edition. MORE

Dr. Daniel Wallace is an editor of Dubois' Lupus Erythematosus and Related Syndromes, 8th Edition, as well as Assistant Program Director of the Rheumatology Fellowship Program at Cedars-Sinai.

Dr. Walls is an internationally known expert in the field of emergency medicine and senior editor of Rosen's Emergency Medicine, 7th Edition. He is currently Chairman of the Department of Emergency Medicine at Brigham & Women’s Hospital.

Dr. Walsh is a pediatrics professor at Case Western Reserve University School of Medicine and Chief of Neonatology at Rainbow Babies & Children's Hospital, Cleveland, Ohio. She is author of Fanaroff and Martin's Neonatal-Perinatal Medicine.

Dr. Walters earned his MD at the Ohio State University College of Medicine & Public Health and is currently a professor and Vice-Chair of Gynecology at the Cleveland Clinic as well as author of Hysterectomy for Benign Disease.