1988, WC, San Antonio, USA
Prof. John Mallard, UK (IOMP)
1991, WC, Kyoto, Japan
Dr. J. A. Hopps, Canada
1994, WC, Rio de Janerio, Brazil
Prof. Rune Walstam, Sweden (IOMP)
1997, WC, Nice, France
Prof. John Cunningham, Canada (IOMP)
2000, WC, Chicago, USA
Prof. Keith Boddy, UK (IOMP)
2003, WC, Sydney, Australia
Prof. Colin Orton, USA (IOMP)
2006, WC, Seoul, Korea
Prof. Pedro Andreo, Spain/Sweden
2009, WC, Munich, Germany
Prof. Gary Fullerton, USA (IOMP)
2012, WC, Beijing, China
Prof. Caridad Borrás, USA
2015, WC, Toronto, Canada
Prof. Peter Smith, UK (IOMP)
2018, WC, Prague, Czech Republic
Prof. Eliseo Vano, Spain (IOMP)