Investigating an outbreak of Clostridium perfringens gastroenteritis in a school using smartphone technology, London, March 2013 Simone, B and Atchison, C and Ruiz, B and Greenop, P and Dave, J and Ready, D and Maguire, H and Walsh, B and Anderson, S, Eurosurveillance, 19, 20799 (2014), https://doi.org/10.2807/1560-7917.ES2014.19.19.20799