RT Journal Article SR Electronic T1 Giant inflammatory myofibroblastic tumor of the hypopharynx: an unusual cause of acute upper airway obstruction in a 6-year-old child JF World Journal of Pediatric Surgery JO World Jnl Ped Surgery FD BMJ Publishing Group Ltd SP e000342 DO 10.1136/wjps-2021-000342 VO 5 IS 2 A1 Yang, Liu A1 Li, Wen YR 2022 UL http://wjps.bmj.com/content/5/2/e000342.abstract AB