Evaluating R2Play, A Novel Multidomain Return-to-Play Assessment Tool for Concussion: Mixed Methods Feasibility and Face Validity Study. - Shore J; Gill P; DuPlessis D; Kyrinis E; Lovell A; Mallory KD; Hickling A; Hutchison M; Munce S; Schneider KJ; Biddiss E; Scratch SE (JMIR rehabilitation and assistive technologies, 2025)