Protective actions of melatonin against heart damage during chronic Chagas disease - Oliveira, Luiz Gustavo Rodrigues; Kuehn, Christian Collins; Santos, Carla Domingues dos; Miranda, Mariza Abreu; Costa, Cassia Mariana Bronzon da; Mendonça, Vagner José da; Prado Júnior, José Clóvis do (Acta Tropica, 2013)