BMJ Open Sport and Exercise Medicine, 6(1):e000811. BMJ Publishing Group Olij, B F, Kemler, E, Valkenberg, H, Stam, C, Gouttebarge, V & Verhagen, E 2020, ' Trends in sports-related emergency department visits in the Netherlands, 2009-2018 ', BMJ open sport & exercise medicine, vol. 6, no. 1, e000811, pp. e000811 . https://doi.org/10.1136/bmjsem-2020-000811 BMJ open sport & exercise medicine, 6(1):e000811. BMJ Publishing Group BMJ Open Sport & Exercise Medicine, Vol 6, Iss 1 (2020) BMJ Open Sport — Exercise Medicine