Aziz Imran, Hadjivassiliou Marios, Sanders David S
Department of Gastroenterology, Royal Hallamshire Hospital, Sheffield, UK.
Department of Neurology, Royal Hallamshire Hospital, Sheffield, UK.
Am J Gastroenterol. 2014 Sep;109(9):1498-9. doi: 10.1038/ajg.2014.205.