Em. Univ. Prof. Dr. Siegfried Meryn, born on March 6, 1954 in Vienna, is one of the leading internists in Austria and has been a specialist and professor of internal medicine and additive specialist for gastroenterology, hepatology and endoscopy at the Medical University of Vienna for many years. He is also a member of the Bioethics Committee at the Federal Chancellery, Chairman of the ORF Health Advisory Board and a member of the ORF Audience Council.