Collaborations
- J. Cameron, USA
- R. Chari, USA
- K. Kang, Korea
- C. Bassi, Italy
- J. Barkun, Canada
- M. Makuuchi, Japan
- M. Monden, Japan
- R. Padbury, Australia
- J. Pekolj, Argentina
- E. de Santibañes, Argentina
- R.D. Schulik, USA
- St. Strasberg, USA
- J.N. Vauthey, USA