Children, bikes, and money.
D000063:Accidents, Traffic / Q000517:prevention & control; D000293:Adolescent; D001642:Bicycling; D002648:Child; D002669:Child Welfare; D006801:Humans; D012306:Risk; D012941:Social Responsibility; D013177:Sports; D014947:Wounds and Injuries / Q000209:etiology