Keighley, M. R.; Asquith, P.; Edwards, J. A.; Alexander-Williams, J. (October 1975). "The importance of an innervated and intact antrum and pylorus in preventing postoperative duodenogastric reflux and gastritis". The British Journal of Surgery. 62 (10): 845–849. doi:10.1002/bjs.1800621024. ISSN0007-1323. PMID123. S2CID33066823.
Keighley, M. R.; Asquith, P.; Edwards, J. A.; Alexander-Williams, J. (October 1975). "The importance of an innervated and intact antrum and pylorus in preventing postoperative duodenogastric reflux and gastritis". The British Journal of Surgery. 62 (10): 845–849. doi:10.1002/bjs.1800621024. ISSN0007-1323. PMID123. S2CID33066823.
Keighley, M. R.; Asquith, P.; Edwards, J. A.; Alexander-Williams, J. (October 1975). "The importance of an innervated and intact antrum and pylorus in preventing postoperative duodenogastric reflux and gastritis". The British Journal of Surgery. 62 (10): 845–849. doi:10.1002/bjs.1800621024. ISSN0007-1323. PMID123. S2CID33066823.
web.archive.org
Bureau of Internal Revenue – Republic of the Philippines. "History of the BIR". Archived from the original on June 15, 2012. Retrieved June 1, 2012.
Keighley, M. R.; Asquith, P.; Edwards, J. A.; Alexander-Williams, J. (October 1975). "The importance of an innervated and intact antrum and pylorus in preventing postoperative duodenogastric reflux and gastritis". The British Journal of Surgery. 62 (10): 845–849. doi:10.1002/bjs.1800621024. ISSN0007-1323. PMID123. S2CID33066823.