1. Sacks JJ, Kresnow M, Houston B, Russell J. Bicycle helmet use among American children, 1994. Inj Prev. 1996;2:258–62.… 2. Pfeiffer RP, Kronisch RL. Off-road cycling injuries. An overview. Sports Med. 1995;19:311–25. 3. Sacks JJ, Holmgreen P, Smith SM, Sosin DM. Bicycle-associated head injuries and deaths in the United States […]