Oxidative and nitrosative stress in frozen-thawed pig spermatozoa. I: protective effect of melatonin and butylhydroxytoluene on sperm function - Pezo, Felipe; Zambrano, Fabiola; Uribe, Pamela; Moya, Claudia; Andrade, André Furugen Cesar; Risopatron, Jennie; Yeste, Marc; Burgos, Rafael A; Sánchez, Raúl (Research in Veterinary Science, 2021)