Bond, A., A. Vernon, S. Reade, A. Mayor, C. Minetti, J. Wastling, K. Lamden, and C. Probert. “Investigation of Volatile Organic Compounds Emitted from Faeces for the Diagnosis of Giardiasis”. Journal of Gastrointestinal and Liver Diseases, vol. 24, no. 3, Sept. 2015, pp. 281-6, doi:10.15403/jgld.2014.1121.243.abo.