Dr. Ludwig holds an MD from Temple University School of Medicine and is currently an emergency medicine attending physician at the Children's Hospital of Philadelphia as well as an author of Netter's Pediatrics.

Dr. Lumb received his MD from Westminster Medical School and is currently a professor and Chair of Anesthesiology at the University of Southern California, Los Angeles as well as editor of the Journal of Critical Care.

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