Andrej Lyshchik, MD, PhD is Associate Professor of Radiology at Thomas Jefferson University Hospital in Philadelphia. He is the author of Specialty Imaging: Fundamentals in Contrast-Enhanced Ultrasound. MORE

Dr. MacLennan earned his MD from the University of Manitoba and is currently a professor of pathology, urology, & oncology at Case Western Reserve University School of Medicine. He is author of Hinman's Atlas of UroSurgical Anatomy.

Dr. Macura received her MD from the Medical University of Lodz, Poland and is currently a radiology professor at Johns Hopkins University and Hospital, Baltimore, as well as co-author of Genitourinary Imaging, 3rd Edition.

Christopher Madden, MD, FACSM is Assistant Clinical Professor, University of Colorado Health Sciences Center, Department of Family Medicine, Aurora, Colorado; Sports and Family Medicine Physician in private practice, Longs Peak Family Practice and Sports Medicine, Longmont, Colorado; Team Physician, Lyons High School, Lyons, Colorado. MORE

Alan Magill, MD, is an author of Hunter's Tropical Medicine and Emerging Infectious Disease, 9th Edition and the director of the Division of Experimental Therapeutics at the Walter Reed Army Institute of Research.