tools and national and international epidemiological surveys. In 2000, Wittchen was appointed as chair and Director of the Institute of Clinical Psychology and Psychotherapy at the Technische Universität Dresden. During the time period from 2000 to 2017, he founded the Center of Clinical Epidemiology and Longitudinal Studies (CELOS), the Neuroimaging Center (NIC) and the IAP-TU Dresden GmbH for treatment of mental disorders and the postgraduate education of psychotherapists in Dresden. After retiring from the position of chair in 2017, he accepted the position of a research group leader at the Department of Psychiatry and Psychotherapy of the Ludwig-Maximilians-Universität in Munich. His contract was suspended in April 2021 following an investigation into allegations of data fabrication, document manipulation, and whistleblower intimidation. Prof. Wittchen is a licensed psychotherapist and still acts as CEO of the IAP-TU Dresden GmbH. Work Prof. Wittchen is a basic and clinical researcher, focusing on the identification of causal factors for mental disorders by combining clinical psychological and psychiatric paradigms and methods with epidemiological approaches and methods. His groundbreaking studies on the course and outcome of treated and untreated anxiety and affective disorders have advanced the knowledge and improved treatment of anxiety (panic attacks, panic disorder, agoraphobia, GAD) and affective disorders particularly by developing “symptom progression” and “comorbidity” models. These studies led to the development of numerous psychotherapy manuals for anxiety and substance use disorders that after a series of randomized clinical trials have become the state-of-the-art manuals for various disorders. They also led to subsequent studies in which he explored the role of stress, trauma PTSD and substance use as well as the impact of mental disorders on neurological and somatic disease. He also was PI and Co-PI on a number of studies on the prevalence, effects, course, care, therapy, and prevention of mental disorders in Germany and worldwide. His 2005 and 2011 studies "Size and burden of mental disorders in Europe" are among his most cited recent works. Wittchen conducts aetiological basic research on anxiety disorders, depressive disorders, stress and substance-related disorders as well as on related physical disorders. Wittchen specifically claims to have aided the discovery of generalized anxiety disorder. Fields of his studies include frequency, burdening effects, progress, treatment, therapy and prevention of mental disorders. Since the late 90's, Wittchen has been author and co-author of the German edition of the DSM-IIIR to DSM-5 revision and he contributed substantially to the development of diagnostic