1. CICAB Clinical Research Centre, Extremadura University Hospital and Medical School, Badajoz, Spain.
2. Department of Analytical Chemistry and Food Technology, Faculty of Pharmacy, University of Castilla-La Mancha, Albacete, Spain.
3. Instituto Politécnico Nacional, CIIDIR Unidad Durango, Durango, México.
4. Unidad Académica de Ciencias Químicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico.