[1] Univ Autonoma Queretaro, Fac Ciencias Nat Licenciatura & Nutr, Queretaro, Mexico
[2] Univ Nacl Autonoma Mexico, Fac Estudios Super Cuautitlan, Cuautitlan, Mexico
[3] Inst Nacl Invest Forestales Agr & Pecuarias, Guanajuato, Mexico
[4] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico