Annual congress of the European Association of Endoscopic Surgery; First Joint Euro-Asian Congress for Endoscopic Surgery, İstanbul, Turkey, June 17-21, 1997.I.Congress of Mediterranean Association of Pediatric Surgery, Cairo, Egypt, 1997. IX. Annual Meeting European Society of Pediatric Urology, Salzburg, April 16-18, Avusturya, 1 - 04 Ocak 1998