Randomised clinical trial: faecal microbiota transplantation for recurrent Clostridum difficile infection - fresh, or frozen, or lyophilised microbiota from a small pool of healthy donors delivered by colonoscopy. - Jiang, Z. D.; Ajami, N. J.; Petrosino, J. F.; Jun, G.; Hanis, C. L.; Shah, M.; Hochman, L.; Ankoma‐Sey, V.; DuPont, A. W.; Wong, M. C.; Alexander, A.; Ke, S.; et al. (Alimentary Pharmacology & Therapeutics, 2017)