 The donor stool will be administered to the patient endoscopically. All patients will undergo colonoscopy and the donor stool will be infused through the colonoscope. Decision to perform duodenal infusion as well as colonic infusion will be dictated by patient preference. If the patient consents they will also undergo oesphogastrodoudenoscopy and donor stool will be infused through the gastroscope into the patients duodenum. 