1. School of Nursing The University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
2. Gillings School of Global Public Health The University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. School of Medicine Duke University and Geriatric Research Education and Clinical Center at the Durham VA Medical Center Durham North Carolina USA
4. School of Nursing University of Pennsylvania Philadelphia Pennsylvania USA
5. School of Medicine The University of North Carolina at Chapel Hill Chapel Hill North Carolina USA