Dietary intake and nutritional deficiencies in patients with diabetic or idiopathic gastroparesis - Parkman, H P; Yates, K P; Hasler, W L; Nguyan, L; Pasricha, P J; Snape, W J; Farrugia, G; Calles, J; Koch, K L; Abell, T L; McCallum, R W; Petito, D; Parrish, C R; Duffy, F; Lee, L; Unalp-Arida, A; Tonascia, J; Hamilton, F NIDDK Gastroparesis Clinical Research Consortium (Gastroenterology, 2011)