Role of Electrogastrography in Detecting Motility Disorders in Children Affected by Chronic Intestinal Pseudo-Obstruction and Crohn's Disease - Bracci, F; Iacobelli, B D; Papadatou, B; Ferretti, F; Lucchetti, M C; Cianchi, D; Francalanci, P; Ponticelli, A (European Journal of Pediatric Surgery, 2003)