Socioeconomic and sex inequalities in chronic pain: A population-based cross-sectional study - Oliveira, Ana Maria Braga de; Teixeira, Doralice Severo da Cruz; Menezes, Fabricio dos Santos; Marques, Amelia Pasqual; Duarte, Yeda Aparecida de Oliveira; Casarotto, Raquel Aparecida (PLOS ONE, 2023)