<a href="/doctors/prof-dr-med-michael-berger">Prof. Dr. med. Michael Berger</a> - 5,526 publications, <a href="/doctors/prof-dr-med-andreas-paul">Prof. Dr. med. Andreas Paul</a> - 2,932 publications, <a href="/doctors/prof-dr-med-ken-herrmann">Prof. Dr. med. Ken Herrmann</a> - 1,347 publications, <a href="/doctors/prof-dr-med-martin-schuler">Prof. Dr. med. Martin Schuler</a> - 975 publications, and <a href="/doctors/prof-dr-med-michael-forsting">Prof. Dr. med. Michael Forsting</a> - 683 publications are neuroendocrine tumor physician in Essen with the most extensive scientific background.