Nilaban, S., Nakayotinsakul, Y., Khobthong, L., Sangdueanchai, S., Singto, T., Koontham, S., Inprom, N. and Boonchaipanitwattana, S. 2023. Quality of Life of Opium Addicts after Treatment and Rehabilitation at Drop-in Center: Case Study the Expansion of the Royal Project for Sustainable Problem-Solving of the Opium Cultivation Areas. Journal of Health Science of Thailand. 32, 3 (Jun. 2023), 502–513.