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Oscar J Cordero, Monica Imbernon, Loretta De Chiara, Vicenta S Martinez-Zorzano, Daniel Ayude, Maria Paez de la Cadena, F Javier Rodriguez-Berrocal 
World J Clin Oncol 2(6):245-261. Published online Jun 10, 2011. doi: 10.5306/wjco.v2.i6.245