University Hospital Zürich, Zürich, Switzerland
University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States
Methodist Estabrook Cancer Center, Omaha, Nebraska, United States
University Hospital Cologne, Cologne, Germany
Hartford Healthcare, Hartford, Connecticut, United States
Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Charité University Medicine, Berlin, Germany
University Hospital of Cologne, Cologne, Germany
Municipal Hospital Dresden, Dresden, Germany
University Hospital of Cologne, Cologne, Germany
Augenklinik des Klinikums der Universität München, München, Bayern, Germany
Universitätsklinikum Düsseldorf, Klinik für Augenheilkunde, Düsseldorf, NRW, Germany
Universitätsklinikum des Saarlandes, Klinik für Augenheilkunde, Homburg, Saarland, Germany
Department of Ophthalmology, University of Cologne, Cologne, Germany
Maastricht University Medical Center, Maastricht, Netherlands
IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Mayo Clinic Rochester, Rochester, Minnesota, United States
CHU Lille, Lille, France
Department of Cardiology, University Hospital of Nancy-Brabois, Nancy, France
University Hospital of Essen, Essen, Germany
Hospital Dessau, Dessau-Rosslau, Germany
University Hospital of Frankfurt, Frankfurt am Main, Germany
Klinikum Leverkusen, Leverkusen, NRW, Germany
Universitätsklinikum Würzburg, Würzburg, Bayern, Germany
Universitätsklinikum Aachen, Aachen, NRW, Germany