Canan CE, Myers JA, Owens RK, Crawford CH 3rd, Djurasovic M, Burke LO, Bratcher KR, McCarthy KJ, Carreon LY. Spine (Phila Pa 1976). 2013 Abr 15; 38(8):703-8. doi: 10.1097/BRS.0b013e3182767c8c.
Norton Leatherman Spine Center, Louisville, KY 40202, EUA.