Secretariat: Room 105, College of Medicine Building University of the East — Ramon Magsaysay Memorial Medical Center Aurora Blvd., Quezon City Philippines Tel./Fax +632-7161850

DGVS Prof. Dr. med. C. Ell Zentrum Innere Medizin Dr. Horst-Schmidt-Kliniken GmbH L.-Erhard-Straße 100 65199 Wiesbaden, Germany Tel. +49-611-432420 Fax +49-611-432418

The Korean Society of Gastrointestinal Endoscopy, The Korean Medical Association Building 302-75, Icheon-1 Dong, Yongsan-Ku, Seoul, 140-030, Korea Tel. 82-2-798-1552 Fax 82-2-798-5398 E-mail gie@doctors.co.kr

Prof. Qi-lian Zhang Dept. of Surgery First Teaching Hospital Beijing Medical University Chang Qiao, Xi Cheng Yu Beijing, China Tel. +86-10-66171122 Ext. 2437 Fax +86-10-66176450

Prof. Dr. Foud Thakeb 7 El Batal Ahmed abdel Aziz Bab El Lock Abdien Cairo, Egypt Tel. 20-2-3509104 Tel. 20-2-5171399 Fax 20-2-3507172/5861702

Michel Buset Hopital Universitaire Brugmann Place Van Gehuchten, 4 B-1020 Brussels Belgium Tel. 32-2-4776300 Fax 32-2-4776325

Markusovszky Teaching Hospital 9700 Szombathely, Markusovszky u. 3 Tel. 36-94-311542 Fax 36-94-327873

Calle 11 n8 1129 18 \(A\) 1900 — La Plata Provincia de Buenos Aires Republica Argentina Tel. 54-21-241991 Fax 54-21-2225111

c/o Endoscopy Centre Prince of Wales Hospital Shatin N. T. Hong Kong Tel. (852)26322233 Fax (852)26350075

Dr. L. Aabakken Medical Department of «Gastroenterology Ulleval University Hospital N-0407 Oslo, Norway Tel. 0047-22-119168 Fax 0047-23-015930

Dr. F. M. Nagengast Radbout Ziekenhuis G. Grooteplein Zuid 8 6525 GA Nijmegen The Netherlands Tel. +31-24-3614760 Fax +31-24-3540103

Prof. A. Nowak Department of Gastro-enterology Silesian Medical Academy ul. Medyków 14 PL-40752 Katowice, Poland Tel. +48-32-2527780 Fax +48-32-2523119 e-mail kga@infomed.slam.katowice.pl