Dr. Wei Xu received his Ph.D. in Biostatistics from University of Toronto. He is currently a scientist and principle biostatistician in Princess Margaret Hospital on clinical research of cancer diseases. He is a faculty member at the Dalla Lana School of Public Health, University of Toronto and on the Editorial Board of the Journal of Medical Statistics and Informatics. Dr. Xu's research interests are statistical genetics and clinical trial design and analysis. He is the author or co-author of over 100 publications in peer-review journals.