1. Asklepios Klinik Barmbek, Gastroenterolgie & Interventionelle Endoskopie, Hamburg, Germany
2. Asklepios Klinik Barmbek, Viszeralchirurgie, Hamburg, Germany
3. Asklepios Klinik Barmbek, Onkologie & Palliativmedizin, Hamburg, Germany
4. MVZ Hanse Histologikum GmbH, Hamburg, Germany
5. Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan