Hans F A Vasen, Ignacio Blanco, Katja Aktan-Collan, Jessica P Gopie, Angel Alonso, Stefan Aretz, Inge Bernstein, Lucio Bertario, John Burn, Gabriel Capella, Chrystelle Colas, Christoph Engel, Ian M Frayling, Maurizio Genuardi, Karl Heinimann, Frederik J Hes, Shirley V Hodgson, John A Karagiannis, Fiona Lalloo, Annika Lindblom, Jukka-Pekka Mecklin, Pal Møller, Torben Myrhoj, Fokko M Nagengast, Yann Parc, Maurizio Ponz de Leon, Laura Renkonen-Sinisalo, Julian R Sampson, Astrid Stormorken, Rolf H Sijmons, Sabine Tejpar, Huw J W Thomas, Nils Rahner, Juul T Wijnen, Heikki Juhani Järvinen, Gabriela Möslein, (the Mallorca group)
Gut. 2013 Jun; 62(6): 812–823. Published online 2013 Feb 13. doi: 10.1136/gutjnl-2012-304356