1. Dermatology Department; Hospital Central ‘Dr. Ignacio Morones Prieto’; Autonomous University of San Luis Potosí; San Luis Potosí México
2. Engineering Division; University of Guanajuato; Guanajuato México
3. School of Sciences; Autonomous University of San Luis Potosí; San Luis Potosí México
4. Coordination for the Innovation and the Application of Science and Technology; Autonomous University of San Luis Potosí; San Luis Potosí México