Papagrigoriadis، S.؛ Browse، D. J.؛ Howard، E. R. (1998). "Incarceration of umbilical hernias in children: a rare but important complication". Pediatric Surgery International. ج. 14 ع. 3: 231–2. DOI:10.1007/s003830050497. PMID:9880759.
Papagrigoriadis، S.؛ Browse، D. J.؛ Howard، E. R. (1998). "Incarceration of umbilical hernias in children: a rare but important complication". Pediatric Surgery International. ج. 14 ع. 3: 231–2. DOI:10.1007/s003830050497. PMID:9880759.