September 30, 2020 - Professor Nima Rezaei

President of the Universal Scientific Education and Research Network (USERN), Professor, Department of Clinical Immunology and Allergology, Tehran University of Medical Sciences, Iran

June 27, 2019 - Dr. Plamen Staikov

Medical Director of the Sachsenhausen Hospital, Germany

April 19, 2018 - Dr. Gerhard Dammann

Director of the Psychiatric Clinic in Musterlingen, Swiss Confederation

April 20, 2017 - Dr. Wolfgang Bauermeister

Director of the Pain Institute, Germany

September 22, 2016 - Dr. Michael Schenk

Head of the Department of Anesthesiology and Pain Therapy in the Havelhöhe Clinic, the Anthroposophical Medicine Clinic, the Charite University Hospital, Germany

October 17, 2013 - Dr. Ruben Matalon

Professor, Department of Paediatrics, Biological Chemistry and Human Genetics, Texas Medical University, USA

June 21, 2007 - Dr. Bedrettin Dalan

Chairman of the Board of Trustees of Yeditepe University, Turkey