RT Journal Article SR Electronic T1 Rare cause of recurrent iron deficiency anaemia JF Frontline Gastroenterology JO Frontline Gastroenterol FD BMJ Publishing Group Ltd SP 545 OP 546 DO 10.1136/flgastro-2021-102028 VO 13 IS 6 A1 Musfira Shakeel A1 Gaurav Nigam A1 Maysoon Farroha A1 Muhammad Afzal YR 2022 UL http://fg.bmj.com/content/13/6/545.abstract AB