1. Pathology Department, University Hospital “Dr. Jose E. Gonzalez” and Medical School of the Autonomous University of Nuevo Leon, Francisco I. Madero and Gonzalitos, 64460 Monterrey, NL, Mexico
2. Surgery Department, University Hospital “Dr. Jose E. Gonzalez” and Medical School of the Autonomous University of Nuevo Leon, Francisco I. Madero and Gonzalitos, 64460 Monterrey, NL, Mexico
3. Medical School of the Autonomous University of Nuevo Leon, Francisco I. Madero and Gonzalitos, 64460 Monterrey, NL, Mexico