1. Translational Health Economics Group (THE Group); Department of Conservative Dentistry; Heidelberg University; Heidelberg Germany
2. Max Planck Institute for Social Law and Social Policy; Munich Center for the Economics of Aging; Munich Germany
3. Institute of Epidemiology and Preventive Medicine; College of Public Health; National Taiwan University; Taipei Taiwan
4. Department of Periodontology; Faculty of Dentistry; University of Münster; Münster Germany