Dellaroza, Mara Solange Gomes, Cibele Andrucioli de Mattos Pimenta, Maria Lucia Lebrao, and Yeda Aparecida Duarte. 2013. “Association of Chronic Pain With the Use of Health Care Services by Older Adults in Sao Paulo”. Revista De Saúde Pública 47 (5): 914-22. https://doi.org/10.1590/rsp.v47i5.76702.