1. University of York; Department of Health Sciences; Heslington York - None - UK Y010 5DD
2. University of Sheffield; School of Health and Related Research (ScHARR); Regent Court 30 Regent Street Sheffield UK S1 4DA
3. Homeopathy Research Institute; 39 Great Windmill Street London Wales UK W1D 7LX
4. Doncaster Royal Infirmary; Department of Gastroenterology and Medicine; Armthorpe Road Doncaster UK DN2 5LT
5. Northumbria University; Department of Sport, Exercise and Rehabilitation; Newcastle Upon Tyne UK