1. School of Medicine; Pharmacy and Health; Durham University; Stockton-on-Tees UK
2. Research Evaluation Unit; Oxford PharmaGenesis™ Ltd; Oxford UK
3. Institut Pasteur de Lille; Centre for Infection and Immunity of Lille; Lille France
4. Université Lille Nord de France; Lille France
5. CNRS UMR 8204; Lille France
6. INSERM U1019; Lille France
7. Centre for Gastrointestinal Sciences; University of Manchester; Wythenshawe Hospital; Manchester UK
8. Centre for Family Medicine; Karolinska Institute; Stockholm Sweden
9. Gastroenterology Unit; Don Bosco Outpatient Clinic; Rome Italy
10. Clinic of Social and Family Medicine; School of Medicine; University of Crete; Heraklion Greece
11. La Mina Primary Care Centre; Barcelona Spain
12. Nutrition Committee of the Scientific Society of General Practice (SSMG, Belgium); Brussels Belgium
13. Julius Centre for Health Sciences and Primary Care; UMC Utrecht; Utrecht The Netherlands