Colorectal Polyp Extraction System (CoPEx): A Natural Language Processing Pipeline to Extract Colorectal Polyp Characteristics from Pathology Reports. - Ryzen Benson; Candace Winterton; Maci Winn; Mei Liu; Noor Abu-El-Rub; John F. Hurdle; Mike Conway; Andrew Gawron; Sheetal Hardikar (AMIA, 2021)