Section Editor
Affiliate Professor of Medicine
University of Washington School of Medicine
Seattle
University of Washington School of Medicine
Seattle
Contributor

Honorary Professor of Medicine
Universidad de La Republica, Montevideo, Uruguay
Visiting Professor
University of Belgrade, Serbia
Chief of Endoscopy
Ameos University Teaching Hospital
(Otto von Guericke University)
Halberstadt, Germany
Founder, EndoCollab
Universidad de La Republica, Montevideo, Uruguay
Visiting Professor
University of Belgrade, Serbia
Chief of Endoscopy
Ameos University Teaching Hospital
(Otto von Guericke University)
Halberstadt, Germany
Founder, EndoCollab
Marking a specific location in the gastrointestinal tract can