Links:
[1] https://mail.momsteam.com/concussion-rates-in-high-school-sports
[2] https://mail.momsteam.com/health-safety/concussion-safety/news-studies/concussions-in-sports-does-gender-matter
[3] https://mail.momsteam.com/health-safety/gender-and-concussion-history-affect-recovery-study-finds