1. JB Medical Ltd, Little Cornard
SudburyUK
2. Division of Endoscopy, European Institute of Oncology
MilanoItaly
3. Centre for Gastroenterology, Royal Free Hospital
LondonUK
4. Klinikum Aschaffenburg
AschaffenburgGermany
5. Israelitic Hospital, University of Hamburg
HamburgGermany
6. Gastrointestinal Unit, A.Manzoni Hospital
LeccoItaly
7. Norgine
HarefieldUK