Helmets significantly (clinically and statistically) reduce the rate of all head injuries, not just skull fracture: https://scholar.google.com/scholar?hl=en&as_

Helmets significantly (clinically and statistically) reduce the rate of all head injuries, not just skull fracture: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=bicycle+helmets&oq=bicycle+helmet#d=gs_qabs&t=1662787659280&u=%23p%3DilCmHn6svcAJ https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=bicy...