PDQ Evidence-Based Principles & Practice, 2nd edition
Ann McKibbon, BSc, MLS Health Information Research Unit, Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario CANADA Nancy Wilczynski MSc, PhD Professor, Department of Radiation Oncology Professor, Department of Radiology Department of Clinical Epidemiology & Biostatistics McMaster University, Hamilton, ON, Canada