Mark A. Crowther, MD, MSc, FRCPC McMaster University, Hamilton, Ontario, Canada Jeff Ginsberg, MD, FRCPC, McMaster University, Hamilton, Ontario, Canada Holger J. Schünemann, MD, PhD, MSc, FACP, FCCP, Italian National Cancer Institute, Rome, Italy Ralph M. Meyer, MD, FRCPC Queen's University, Kingston, Ontario, Canada Richard Lottenberg, MD, FACP, University of Florida, Gainesville, FL, USA