1. Michael J. Racz is Assistant Professor, Department of Arts and Sciences, Albany College of Pharmacy and Health Sciences, Albany, NY 12208 and Adjunct Assistant Professor, Department of Epidemiology and Biostatistics, University at Albany, School of Public Health, Rensselaer, NY 12144. J. Sedransk is Professor, Department of Statistics, Case Western Reserve University, Cleveland, OH 44106-7054 . The authors are grateful to the referees for their excellent suggestions and to Dr. Donald Malec whose...