1 Anigen Center of Studies and Investigations, Municipio Libre 366, Col. Sta. Cruz Atoyac, Del. Benito Juárez C.P. 03310, Mexico.
2 Laboratory of Genetic Identification, Department of Legal Medicine, Toxicology and Physical Anthropology, Universidad de Granada, Avda. de Madrid 11, 18071 Granada, Spain. Electronic address: msaiz@ugr.es.
3 Centre of Molecular Antropology for Ancient DNA Studies, Dipartimento di Biologia, Università di Roma "Tor Vergata," Rome, Italy.
4 Laboratory of Genetic Identification, Department of Legal Medicine, Toxicology and Physical Anthropology, Universidad de Granada, Avda. de Madrid 11, 18071 Granada, Spain.