Authors: Yvan Vandenplas; Rajat Mukherjee; Christophe Dupont; Philippe Eigenmann; Arne Høst; Mikael Kuitunen; Carmen Ribes-Koninkx; Neil Shah; Hania Szajewska; Andrea von Berg; Ralf G Heine; Zheng-Yan Zhao Journal: BMJ Open Date: 2018-05-17 Impact factor: 2.692