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Ramírez-Amador V, Esquivel-Pedraza L, Mohar A, Reynoso-Gómez E, Volkow-Fernández P, Guarner J, Sánchez-Mejorada G.Ramírez-Amador V, et al.Eur J Cancer B Oral Oncol. 1996 Sep;32B(5):322-7. doi: 10.1016/0964-1955(96)00020-6.Eur J Cancer B Oral Oncol. 1996.PMID: 8944835Clinical Trial.