Ms. Karwalajtys, Ms. Chong and Ms. Sparrow are with the Health Services Delivery Research Unit, Father Sean O'Sullivan Research Centre, St. Joseph's Hospital, Hamilton, Ont. Ms. Karwalajtys and Dr. Kaczorowski are with the Department of Family Medicine, Dr. Kaczorowski is with the Department of Clinical Epidemiology and Biostatistics, and Dr. Mahony is with the Department of Pathology, McMaster University, Hamilton, Ont. Dr. Lytwyn is with the Department of Pathology, University of Toronto, Toronto, Ont. Dr. Lorincz is scientific director of Digene Corporation, Gaithersburg, Md. At the time of writing, Dr. Sellors was with the Health Services Delivery Research Unit, Father Sean O'Sullivan Research Centre, St. Joseph's Hospital, and the Departments of Family Medicine and of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ont.; he is now with the Program for Appropriate Technology in Health, Seattle, Wash. John W. Sellors. Janusz A. Kaczorowski, Alice Lytwyn and James B. Mahony. Central East Region: Barbara Alexander, Sadrudin Bardai, Janice Boxall and Peter Deimling; Central West Region: Nancy Abram, Cameron Duthie, Bruce Silburt, Martha Taylor, Sophie Xenoyannis and Preston Zuliani; Eastern Region: Marie-Josée Deslauriers and Janet Dollin; Southwestern Region: Kate Bailey, Sharon Doyle, Emer Dudley and Andrea Steen.