Helmet poster boy.
Lowell D
LD
Lutter
D001642:Bicycling / Q000293:injuries*; D006259:Craniocerebral Trauma / Q000517:prevention & control*; D006260:Head Protective Devices; D006266:Health Education; D006801:Humans; D008297:Male; D014474:Unconsciousness / Q000209:etiology*