Knoop Richard F, Schmidt Arthur, Kayser Gian, Thimme Robert, Fischer Andreas
Department of Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, University of Goettingen, Goettingen, Germany.
Faculty of Medicine, Department of Medicine II, University Hospital Freiburg, University of Freiburg, Freiburg, Germany.
VideoGIE. 2019 Jan 11;4(2):58-61. doi: 10.1016/j.vgie.2018.10.015. eCollection 2019 Feb.