Printed Signatures and Response Rates
Malcolm M. Koo, Thomas E. Rohan · Epidemiology · 1995
Department of Preventive Medicine and Biostatistics, University of Toronto Department of Preventive Medicine and Biostatistics, and National Cancer Institute of Canada, Epidemiology Unit, 12 Queen's Park Crescent West, McMurrich Building, University of Toronto, Toronto, Ontario, Canada M5S 1A8 (address for reprints)