Letter: Automobile head restraints.
D000063:Accidents, Traffic; D000704:Analysis of Variance; D001336:Automobiles; D005260:Female; D006801:Humans; D008297:Male; D019838:Neck Injuries; D011482:Protective Devices; D012737:Sex Factors; D013223:Statistics as Topic / Q000379:methods; D014911:Whiplash Injuries / Q000453:epidemiology*