Barriers to bicycle helmet use among children. Results of focus groups with fourth, fifth, and sixth graders.
Howland J, Sargent J, Weitzman M, Mangione T, Ebert R, Mauceri M, Bond M. Barriers to bicycle helmet use among children. Results of focus groups with fourth, fifth, and sixth graders. Am J Dis Child. 1989 Jun; 143(6):741-4.