QIAN, M.- ping; DONG, M.- rong; KANG, F.; LI, J. Effect of the duration of chronic low back pain on pain sensitivity of patients undergoing lumbar fusion surgery. Pain medicine, [S. l.], v. 5, n. 4, p. 8–15, 2021. DOI: 10.31636/pmjua.v5i4.2. Disponível em: https://painmedicine.org.ua/index.php/pnmdcn/article/view/237. Acesso em: 10 apr. 2021.