Mekawichai, P. “The Prevalence and the Associated Factors of Sleep-Related Problems in Patients with Parkinson’s Disease at Maharat Nakhon Ratchasima Hospital”. Maharat Nakhon Ratchasima Hospital Journal, vol. 34, no. 3, Sept. 2024, pp. 169-76, https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/1815.