Xiaoliang Liu, Lumin Xing, Xin Li，. “STUDY OF OPERATING ROOM INTELLIGENT MANAGEMENT SYSTEM BASED ON THE COMBINATION OF BIG DATA AND PDCA”. Design Engineering (July 31, 2021): 5561- 5568. Accessed May 6, 2024. http://thedesignengineering.com/index.php/DE/article/view/3037.