[1] Univ La Frontera, Dept Preclin Sci, BIOREN CEBIOR, Temuco, Araucania, Chile
[2] Univ La Frontera, BIOREN CEBIOR, Temuco, Araucania, Chile
[3] Univ La Frontera, BIOREN CEBIOR, Dept Basic Sci, Temuco, Araucania, Chile
[4] Univ La Frontera, Dept Agr Sci & Nat Resource, Temuco, Araucania, Chile
[5] Ctr Androgen, La Coruna, Spain
[6] Univ Autonoma Barcelona, Dept Med & Cirurgia Anim, E-08193 Barcelona, Spain