@misc{indiciae1967cdef9323, title = {Physicians promoting bicycle helmets for children: a randomized trial.}, author = {R Cushman and W James and H Waclawik}, year = {1991}, doi = {10.2105/ajph.81.8.1044}, url = {https://pubmed.ncbi.nlm.nih.gov/1853997/}, note = {Source identifier: 1853997} }