Barriers to Endoscopic Mucosal Resection of Large Colorectal Lesions: Results of a Nationwide Survey: 225. (October 2019) - Holmes, Ian; Yu, Jessica X.; Millar, Morgan M.; Malvar, Carmel; Nguyen‐Vu, Tiffany; Gawron, Andrew J.; Kwon, Richard; Roy, Soetikno; Kaltenbach, Tonya