1. Honorary Professor in History of Dentistry, King's College London London UK
2. Emeritus-professor in Dental Public Health, University of London London UK
3. Past President and national secretary, British Paedodontic Society London UK
4. Private practice Jerusalem Israel
5. International Association of Paediatric Dentistry Geneva Switzerland
6. Department of Pediatric Dentistry Rutgers School of Dental Medicine Rutgers University Newark NJ
7. Department of Pediatric Dentistry Hebrew University‐Hadassah School of Dental Medicine Jerusalem Israel
8. Department of Pediatric Dentistry Wan Fang Medical Center Taipei Medical University Taipei Taiwan
9. Division of Pediatric Dentistry Department of Stomatology Taipei Veterans General Hospital Taipei Taiwan
10. Department of Pediatric Dentistry National Taiwan University Children's Hospital Taipei Taiwan