1. Department of Health Economics and Health Services Research University Medical Center Hamburg‐Eppendorf Hamburg Center for Health Economics Hamburg Germany
2. Faculty of Public Health Department of Health Education and Behavioral Sciences Mahidol University Bangkok Thailand
3. Department of Psychology University of the Free State Bloemfontein South Africa
4. Department of Psychology College of Medical and Health Science Asia University Taichung Taiwan
5. Department of Internal Medicine Geriatrics Section University of Palermo Palermo Italy
6. African Population and Health Research Center Nairobi Kenya
7. Faculty of Health National Centre for Naturopathic Medicine Southern Cross University Lismore New South Wales Australia