Participants wishing to make scientific contributions are invited to submit abstracts for oral and/or poster presentation by August 15, 2004. Abstract Preparation The EUS 2004 web site may change in order to show the latest information necessary. Contributors are required to read instructions carefully and follow the indicated steps. Abstract Review & Selection Abstracts wlll be reviewed and selected by the Program Committee. Confirmation of acceptance or rejection will be emailed to the corresponding address in September 2004. The most well designed, interesting and/or innovative papers will be selected for oral presentation during the plenary session. Publication All the accepted abstracts will be published in a supplement to Digestive Endoscopy.