WILLIAM C. COCKERHAM is Professor of Sociology, Medicine, and Public health, chair of the Sociology Department, and Co-Director of the Program in Social Medicine at the University of Alabama, Birmingham. He is the author of several books, including Medical Sociology, the standard textbook in the field. His articles have appeared in numerous journals, such as Social Forces, Sociological Quarterly, Social Science and Medicine, Journal of Health and Social Behavior, and Journal of Sociological Methods and Research.FERRIS J. RITCHEY is Associate Professor of Sociology at the University of Alabama, Birmingham. His articles have been published in journals such as Research in the Sociology of Health Care, American Journal of Public Health, Sociological Quarterly, and Journal of Health and Social Behavior.