Effect of zinc supplementation on antioxidant defenses and oxidative stress markers in patients undergoing chemotherapy for colorectal cancer: a placebo-controlled, prospective randomized trial - Ribeiro, Sofia Miranda de Figueiredo; Braga, Camila Bitu Moreno; Peria, Fernanda Maris; Domenici, Fernanda Aparecida; Martinez, Edson Zangiacomi; Féres, Omar; Rocha, José Joaquim Ribeiro da; Cunha, Selma Freire de Carvalho da (Biological Trace Element Research, 2016)