University Hospital of Cologne, Cologne, Germany
University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
The University of Texas Health Science Center at Houston, Houston, Texas, United States
Hospital Sanatorio, Buenos Aires, Argentina
Stanford University School of Medicine, Stanford, California, United States
University of Minnesota Physicians, Minneapolis, Minnesota, United States
Mary Hitchcock Memorial Hospital Dartmouth-Hitchcock, Lebanon, New Hampshire, United States
University Hospital of Cologne, Cologne, Northrhine-Westphalia, Germany
University Hospital of Cologne, Cologne, Germany
University Hospital Cologne, Cologne, NRW, Germany
University Hospital of Cologne, Cologne, North-Rhine Westfalia, Germany
University Hospital of Cologne, Cologne, Northrhine-Westphalia, Germany
Neonatology at the University Hospital of Cologne, Cologne, Germany
Charité - Universitätsmedizin Berlin Klinik für Dermatologie, Venerologie und Allergologie, Berlin, Germany
Uniklinik Köln, Klinik für Dermatologie und Venerologie, Köln, Germany
Helios St. Elisabeth Klinik Oberhausen, Klinik für Dermatologie, Venerologie und Allergologie, Oberhausen, Germany