Alan Wein, MD, is Professor and Chief of the Division of Urology at the University of Pennsylvania School of Medicine, Chief of Urology at the Hospital of the University of Pennsylvania and author of Campbell-Walsh Urology, 10th Edition.

Dr. Weinberger received his MD from Harvard Medical School and is currently Executive Vice President and CEO of the American College of Physicians as well as co-author of Principles of Pulmonary Medicine, 6th Edition.

Dr. Weir received his MD from Harvard Medical School where he is currently a professor. He is also Diabetes Research and Wellness Foundation Chair at Joslin Diabetes Center as well as co-author of the text, Endocrinology, 7th Edition.

Dr. Weissleder is a founding member of the Society for Molecular Imaging Research as well as an author of Primer of Diagnostic Imaging, 5th Edition. He is currently Director of the Center for Molecular Imaging Research.

Dr. Weitz is an award-winning hematologist and former Vice-President of Research for the Heart and Stroke Foundation. He is currently a professor at McMaster University and co-editor of Hematology: Basic Principles and Practices, 6th Edition.