S1397 Gastro-Pyloric Dysfunction in Gastroparesis. (October 2021) - Flaherty, Dylan; Gala, Khushboo; Mathur, Prateek; Bierman, Thomas; McElmurray, Lindsay; Moppins, Carmelita; Gondim, Dibson; Daniels, Michael Wesley; Stocker, Abigail; Rogers, Benjamin; Omer, Endashaw; Abell, Thomas