University of Cologne, Medical Faculty, Cologne, Germany
The University of Arizona Cancer Center, Tucson, Arizona, United States
California Cancer Associates for Research and Excellence, Encinitas, California, United States
University of California, San Francisco, Fresno, California, United States
University Hospital of Cologne, Cologne, Germany
University Hospital Cologne, Cologne, NRW, Germany
Department of electrophysiology, Heart Center Cologne, University of Cologne, Cologne, NRW, Germany
Department of electrophysiology, Heart Center Cologne, University of Cologne, Cologne, NRW, Germany
1st Department of Medicine, Cologne University Hospital, Cologne, Germany
1st Department of Medicine, Cologne University Hospital, Cologne, Germany
University Hospital Zurich, Zürich, Switzerland
Inselspital Bern, Bern, Switzerland
UCLA, Los Angeles, California, United States
University Hospital of Cologne, Cologne, Germany