Lan, N.T., Châu, T.T.T., Liễu, L.T., Nhàn, N.T.T., Tâm, P. Đức, Bích, N.N., Quyên, P.T.M. and Ngọc, N.V. 2026. Evaluation of neuropathic pain using the DN4 questionnaire and associated factors in patients with primary knee osteoarthritis. Journal of Medical Research. 204, 7 (Aug. 2026), 512-520. DOI:https://doi.org/10.52852/tcncyh.v204i7.5478.