---

Always study with the most up-to-date prep! Look for Master the Boards USMLE Step 2 CK , fifth edition, ISBN 9781506235943, on sale February 5, 2019.

Publisher´s Note: Products purchased from third-party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entities included with the product.

---

Conrad Fischer, MD , is director of the residency program at Brookdale University Hospital and Medical Center in New York City and associate professor of physiology, pharmacology, and medicine at Touro College of Osteopathic Medicine in New York City. He teaches USMLE Steps 1, 2, and 3, Internal Medicine Board Review and Attending Recertification, and USMLE Step 1 Physiology.

---