E Oma1, K K Jensen2, L N Jorgensen2. 1. Digestive Disease Center, Bispebjerg Hospital, Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark. erlingom@gmail.com. 2. Digestive Disease Center, Bispebjerg Hospital, Bispebjerg Bakke 23, 2400, Copenhagen, NV, Denmark.