Smeets Fabiënne G M, Keszthelyi Daniel, Masclee Ad A, Conchillo José M
Department of Gastroenterology and Hepatology, Maastricht University Medical Center, Maastricht, the Netherlands.
J Neurogastroenterol Motil. 2015 Jul 30;21(3):450-1. doi: 10.5056/jnm15101.