Jitreengarm, Jiranant, and Yuraporn Sudharatna. “The effect of applying the kaizen concept to increase efficiency in reducing waiting time of service for physical therapy department case study Panyananthaphikkhu Chonprathan Medical Center”. Journal for Strategy and Enterprise Competitiveness 2, no. 5 (August 28, 2023): 63–77. accessed May 28, 2025. https://so07.tci-thaijo.org/index.php/STECOJournal/article/view/3034.