Bradley W. Kesser, MD is Professor of Otolaryngology – Head and Neck Surgery at the University of Virginia Health System in Charlottesville, Virginia. He is a co-author of . MORE

Dr. Kessler received his MD from Tulane University and is currently a professor and attending hematologist/oncologist at Georgetown University as well as co-author of Consultative Hemostasis and Thrombosis, 3rd Edition.

Dr. Kester received his PhD from the State University of New York, Buffalo and is currently a pharmacology professor at Penn State Hershey College of Medicine as well as co-author of Elsevier's Integrated Review: Pharmacology, 2nd Edition.

Dr. Keystone received his MD from the University of Toronto Medical School where he is currently a professor and senior staff physician in the Tropical Disease Unit at Toronto General Hospital. He is an author of Travel Medicine, 3rd Edition.

David Khan, MD is Professor of Internal Medicine at the University of Texas Southwestern Medical Center in Dallas; Training Program Director for the Allergy & Immunology fellowship program at Southwestern; and Director of the Asthma Clinic at Parkland Memorial Hospital. MORE