1. Geriatric Education and Research Institute; Alexandra Health; Singapore
2. Duke-National University of Singapore Graduate Medical School; Singapore
3. Saw Swee Hock School of Public Health; National University of Singapore; Singapore
4. Center for Care and Welfare; Tilburg University; Tilburg The Netherlands
5. Department of Patient and Care; University Hospital Maastricht; Maastricht The Netherlands
6. Department of Family Practice and Chronic Care; VrijeUniversiteit Brussels; Brussels Belgium