RT Journal Article SR Electronic T1 Response to letter titled ‘Reduction of HbA1c in patients with type 2 diabetes following duodenal mucosal resurfacing: could other factors be at play?’ JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 218 OP 218 DO 10.1136/gutjnl-2020-321170 VO 70 IS 1 A1 JJGHM Bergman YR 2021 UL http://gut.bmj.com/content/70/1/218.1.abstract AB