Marshall, S.W., Loomis, D.P., Waller, A.E., et al. Evaluation of protective equipment for prevention of injuries in rugby union, Int. J. Epidemiol., 34 : 113-118, 2005.
Finch, C., Braham, R., McIntosh, A., et al.: Should football players wear custom fitted mouthguards? Results from a group randomized controlled trial, Inj. Prev., 11 :242-246, 2005.
Shimosato, T., Takahashi, M. and Takeuchi, M. : Research of mouthguard function by oral injury data in motocross, Int. J. Sports Dent., 9 : 38-47,2016.