Butsankot, P., O. Thosingha, W. Chanruangvanich, and C. Chawasiri. “The Influence of Co-Morbidity, Body Mass Index, and Depression on Post - Operative Recovery Among Patients Undergoing Lumbar Surgery”. Nursing Science Journal of Thailand, vol. 34, no. 2, June 2016, pp. 129-41, https://he02.tci-thaijo.org/index.php/ns/article/view/77357.