1. Professor and Director, Centre for Health Economics, University of York, UK,, Professor, Centre for Health Economics, University of York, UK, Professor Emeritus, Department of Clinical Epidemiology and Biostatistics, McMaster University, Ontario, Canada, Director, Program for Assessment of Technology in Health, Professor, Centre for Evaluation of Medicines,, Department of Clinical Epidemiology and Biostatistics, McMaster University, Ontario, Canada, Professor, Centre for Health Economics and Policy Analysis, Department of Clinical Epidemiology and Biostatistics, McMaster University, Ontario, Canada