Promoting positive mental health in Portuguese and Brazilian youth sport: the roles and responsibilities of policymakers, coaches, and coach developers - Santos, F.; Newman, T. J.; Vella, S.; Camiré, M.; Rathwell, S.; Strachan, L.; MacDonald, D. J.; Pierce, S.; Ferreira, M.; Milistetd, M. (International Sport Coaching Journal, 2025)