S. Saneemanomai and S. Srisuwannanukorn, “Thai Scales for Outcomes in Parkinson’s Disease-Nighttime Sleep and Modified Parkinson’s Disease Sleep Scale for Assessment of Nighttime Sleep Disorder Compared with Pittsburgh Sleep Quality Index at the Faculty of Medicine Vajira Hospital”, Vajira Med J, vol. 65, no. 1, pp. 45–60, Feb. 2021.