1. Anna Krupp is Assistant Professor, University of Iowa, College of Nursing, 480 CNB, Iowa City, IA 52242 (anna-krupp@uiowa.edu).
2. Karen B. Lasater is Assistant Professor, Center for Health Outcomes and Policy Research, School of Nursing, and Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania.
3. Matthew D. McHugh is Professor of Nursing, Center for Health Outcomes and Policy Research, School of Nursing, and Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania.