HABIT+tDCS: a study protocol of a randomised controlled trial (RCT) investigating the synergistic efficacy of hand-arm bimanual intensive therapy (HABIT) plus targeted non-invasive brain stimulation to improve upper extremity function in school-age children with unilateral cerebral palsy - Andrew M Gordon; Claudio L Ferre; Maxime T. Robert; Karen Chin; Marina Brandao; Kathleen M Friel (BMJ Open, 2022)