(13)C-octanoic acid breath test (OBT) with a new test meal (EXPIROGer): Toward standardization for testing gastric emptying of solids - Perri, F; Bellini, M; Portincasa, P; Parodi, A; Bonazzi, P; Marzio, L; Galeazzi, F; Usai, P; Citrino, A; Usai-Satta, P (Dig Liver Dis, 2010)