Waterman, B. R., Schoenfeld, A. J., & Belmont, P. J. (2012). Low back pain in the United States: Incidence and risk factors for presentation in the emergency setting. The spine journal, 12(1), 63-70. doi:10.1016/j.spinee.2011.09.002
Cita Chicago Style (17a ed.)Waterman, Brian R., Andrew J. Schoenfeld, y Philip J. Belmont. "Low Back Pain in the United States: Incidence and Risk Factors for Presentation in the Emergency Setting." The Spine Journal 12, no. 1 (2012): 63-70. https://doi.org/10.1016/j.spinee.2011.09.002.
Cita MLA (9a ed.)Waterman, Brian R., et al. "Low Back Pain in the United States: Incidence and Risk Factors for Presentation in the Emergency Setting." The Spine Journal, vol. 12, no. 1, 2012, pp. 63-70, https://doi.org/10.1016/j.spinee.2011.09.002.
