Dr. Asensio received his MD from Rush University and is currently Chief of Trauma Surgery & Critical Care at Westchester Medical Center, New York, as well as co-author of Current Therapy of Trauma and Surgical Critical Care.

Dr. Ashar earned an MD from the University of Maryland School of Medicine and is currently the director of the General Internal Medicine Division at Johns Hopkins University as well as co-author of The Johns Hopkins Internal Medicine Board Review.

Dr. Ashley is an innovative researcher and award-winning educator within the field of general surgery. He is currently a surgical professor at Harvard Medical School and co-author of the Atlas of Minimally Invasive Surgical Techniques.

Dr. Asprey received his PhD and BS from the University of Iowa where he is currently a professor and Chair of PA Studies and Services and co-author of Essential Clinical Procedures, 3rd Edition.

Dr. Aster received his MD from the University of Michigan School of Medicine and is currently a pathology professor at Harvard Medical School as well as a pathologist at Brigham and Women's Hospital. He is an author of Hematopathology.