Health literacy and glycemic control in patients with diabetes: a tertiary care center study in Brazil - Gomes, Marilia B; Muniz, Luiza Harcar; Melo, Laura Gomes Nunes; Pizarro, Marcela Haas; Barros, Bianca Senger Vasconcelos; Santos, Deborah Conte; Negrato, Carlos Antonio (Diabetology and Metabolic Syndrome, 2020)