Orduña Valls, J. M.; Cánovas Martínez, L. Controversia Sobre El Uso De Corticoides Epidurales: Epidural Steroid Warning Controversy Still Dogging FDA.Manchikanti L, Candido KD, Singh V, Gharibo CG, Boswell MV, Benyamin RM, Falco FJ, Grider JS, Diwan S, Hirsch JA. Pain Physician. 2014 Jul-Aug;17(4):E451-74. Rev Elect AnestesiaR 2015, 7, 1.