The Garmin-RUNSAFE Running Health Study on the aetiology of running-related injuries: rationale and design of an 18-month prospective cohort study including runners worldwide. - Nielsen RØ; Bertelsen ML; Ramskov D; Damsted C; Brund RK; Parner ET; Sørensen H; Rasmussen S; Kjærgaard S (BMJ open, 2019)