Philipps University of Marburg, Marburg, Hesse, Germany
Ruhr-University Bochum, Bochum, North Rhine-westphalia, Germany
University of Cologne, Cologne, North Rhine-westphalia, Germany
Saint Lukas Clinic, Thessaloniki, Greece
Przychodnia Lekarska Komed Roman Karaszewski, Konin, Poland
Nzoz Provita Prolife Centrum Medyczne, Tomaszow Mazowiecki, Poland
Department II of Internal Medicine,University of Cologne, Cologne, Germany
University of Arkansas, Little Rock, Arkansas, United States
City of Hope, Duarte, California, United States
UC San Diego Health Moores Cancer Center, San Diego, California, United States
University Hospital of Cologne, Cologne, Germany
University Hospital of Cologne, Cologne, Germany
University Hospital Frankfurt, Frankfurt, Germany
Hannover Medical School Hospital, Hannover, Germany
University Hospital Cologne, Cologne, Germany
Otto von Guericke University Magdeburg, Magdeburg, Sachsen-Anhalt, Germany
University Hospital Bonn, Bonn, NRW, Germany
University Hospital Leipzig, Leipzig, Sachsen, Germany
Nationwide Children's Hospital- Ohio State University College of Medicine, Columbus, Ohio, United States
Arkansas Children's Hospital, Little Rock, Arkansas, United States
Nemours/ Alfred i. duPoint Hospital for Children, Wilmington, Delaware, United States
The General University Hospital of Patras, Río, Greece
Te Toka Tumai Auckland, Auckland, New Zealand
Te Whatu Ora Health NZ Waitemata, Auckland, New Zealand