1. Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and Vrije Universiteit; Amsterdam The Netherlands
2. Department of Social Dentistry and Behavioural Sciences; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and Vrije Universiteit; Amsterdam The Netherlands
3. Royal Dutch Dental Association (KNMT); Nieuwegein The Netherlands