Risk factors for developing acute gastrointestinal, skin or respiratory infections following obstacle and mud run participation, the Netherlands, 2017 den Boogert, Elisabeth M and Oorsprong, Danielle M and Fanoy, Ewout B and Leenders, Alexander CAP and Tostmann, Alma and van Dam, Adriana SG, Eurosurveillance, 24, 1900088 (2019), https://doi.org/10.2807/1560-7917.ES.2019.24.40.1900088