S574 Factors Affecting Gastroenterologists' Fear of Contracting COVID-19 During Upper and Lower Endoscopic Procedures: Results From a US National Survey. (October 2021) - Al Shabeeb, Reem Q.; Lee, Esther; El Shatanofy, Muhammad; Pashai, Erika; Benjenk, Ivy; Sherman, Marian; Heinz, Eric; Yamane, David; Borum, Marie L.