We don't need a randomized controlled trial: youth should have a driver's license to operate tractors on public roads.
Marlenga
Barbara
B
D000062:Accidents, Occupational / Q000517:prevention & control*; D000293:Adolescent; D000383:Agriculture; D006801:Humans; D008004:Licensure; D018986:Motor Vehicles; D012449:Safety; D014947:Wounds and Injuries / Q000453:epidemiology / Q000517:prevention & control