1. Professor, Department of Psychology; Sapienza University; Rome Italy
2. Associate Professor, School of Nursing; Oregon Health & Science University; Portland OR
3. Research Fellow, Department of Biomedicine and Prevention; University of Rome Tor Vegata; Rome Italy
4. Professor and Edith Clemmer Steinbright Chair of Gerontology, School of Nursing; University of Pennsylvania; 418 Curie Boulevard Philadelphia PA 19104-4217