Lepard, J., Mekary, R. A., Spagiari, R., Corley, J., Barthélemy, E. J., Kim, E., … Park, K. B. (n.d.). Differences in Outcomes of Mandatory Motorcycle Helmet Legislation by Country-Income Level: A Systematic Review and Meta-Analysis (Accepted). SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3564382

Lepard, Jacob, Rania A. Mekary, Riccardo Spagiari, Jacquelyn Corley, Ernest J. Barthélemy, Eliana Kim, Rolvix Patterson, et al. “Differences in Outcomes of Mandatory Motorcycle Helmet Legislation by Country-Income Level: A Systematic Review and Meta-Analysis (Accepted).” SSRN Electronic Journal, n.d. https://doi.org/10.2139/ssrn.3564382.

Lepard J, Mekary RA, Spagiari R, Corley J, Barthélemy EJ, Kim E, et al. Differences in Outcomes of Mandatory Motorcycle Helmet Legislation by Country-Income Level: A Systematic Review and Meta-Analysis (Accepted). SSRN Electronic Journal.

Lepard, Jacob, et al. “Differences in Outcomes of Mandatory Motorcycle Helmet Legislation by Country-Income Level: A Systematic Review and Meta-Analysis (Accepted).” SSRN Electronic Journal, Elsevier BV. Crossref, doi:10.2139/ssrn.3564382.

Lepard J, Mekary RA, Spagiari R, Corley J, Barthélemy EJ, Kim E, Patterson R, Venturini S, Still MEH, Rosseau G, Park KB. Differences in Outcomes of Mandatory Motorcycle Helmet Legislation by Country-Income Level: A Systematic Review and Meta-Analysis (Accepted). SSRN Electronic Journal. Elsevier BV;