Type 2 refractory celiac disease on third-generation capsule endoscopy and enteroscopy: typical appearance of ulcerative jejunitis - Le Mouel, Jean-Philippe; Fumery, Mathurin; Hakim, Sami; Yzet, Clara; Dervaux, Alexandra; Dray, Xavier; Nguyen-Khac, Eric (Endoscopy, 2020)