Relatioships between decreased retention of food in the proximal stomach and antral contractility in functional dyspepsia - Troncon, Luiz Ernesto de Almeida; Herculano Júnior, José Ruver; Savoldelli, Roberto D.; Moraes, Eder R.; Hara, Samuel H.; Secaf, Marcelo; Oliveira, Ricardo Brandt de (Digestive Disease Week, 2002)