Segal Jonathan P, Smith Philip J, Verma Ajay M
Department of Gastroenterology and Hepatology, St Mary's Hospital, London, UK.
Department of Gastroenterology, Royal Liverpool and Broadgreen Hospitals NHS Trust, Liverpool, UK.
Gastrointest Endosc. 2020 Nov;92(5):1146-1147. doi: 10.1016/j.gie.2020.06.036.