Response to the letter: "Some remarks about the LeishVet directions for the treatment of canine leishmaniosis" - Ferrer, L.; Baneth, G.; Bourdeau, P.; Koutinas, A.; Miró, G.; Pennisi, M.G.; Cardoso, L.; Oliva, G.; Solano-Gallego, L. (Veterinary Parasitology, 2010)