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 at Dalla Lana School of Public Health, University of Toronto. 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.