Dr. David Hwang is a pulmonary pathologist and chief of the Department of Laboratory Medicine and Molecular Diagnostics at Sunnybrook Health Sciences Centre, and a professor in the Department of Laboratory Medicine & Pathobiology at the University of Toronto. His clinical and research interests span several areas of pulmonary pathology, including both neoplastic and non-neoplastic lung disease, and lung transplantation. He has served as chair of the Lung Expert Review Panel for the Canadian Partnership Against Cancer and is currently a member of the Pathology Committee for the International Association for the Study of Lung Cancer.