Author Information:

Tao Le, MD, MHS (Louisville, KY) is Assistant Professor of Medicine and Pediatrics in the Division of Allergy and Clinical Immunology at The University of Louisville. He is also affiliated with the Division of Allergy and Immunology at The Johns Hopkins University School of Medicine (Baltimore, MD). He is the founder of USMLE-Rx.com, an online subscription database of USMLE review questions.