- Austria / Österreich
- Bosnia and Herzegovina / Босна и Херцеговина
- Bulgaria / България
- Croatia / Hrvatska
- Czech Republic & Slovakia / Česká republika & Slovensko
- France / France
- Germany / Deutschland
- Greece / ΕΛΛΑΔΑ
- Italy / Italia
- Netherlands / Nederland
- Nordic / Nordic
- Poland / Polska
- Portugal / Portugal
- Romania & Moldova / România & Moldova
- Slovenia / Slovenija
- Serbia & Montenegro / Србија и Црна Гора
- Spain / España
- Switzerland / Schweiz
- Turkey / Türkiye
- UK & Ireland / UK & Ireland
Dr Akimasa Tsujimoto is an associate professor of operative dentistry at the University of Iowa College of Dentistry and Dental Clinics in Iowa City in the US. He obtained his BDS and PhD at Nihon University in Japan and holds a tenured professorship in operative dentistry at the same university and visiting professorships at Creighton University in Omaha in Nebraska in the US and at the University of Hong Kong.