Substantial prevalence of enteroparasites Cryptosporidium spp., Giardia duodenalis and Blastocystis sp. in asymptomatic schoolchildren in Madrid, Spain, November 2017 to June 2018 Reh, Lucia and Muadica, Aly Salimo and Köster, Pamela Carolina and Balasegaram, Sooria and Verlander, Neville Q and Chércoles, Esther Ruiz and Carmena, David, Eurosurveillance, 24, 1900241 (2019), https://doi.org/10.2807/1560-7917.ES.2019.24.43.1900241