สวัสดิ์ภาพ ดวงรักษ์, and พงษ์คุณากร อนุวัตร. 2015. “Clinical Comparative Study between Modified Drop and Dangle Exercise and Continuous Passive Motion Machine to Increase Flexion after Total Knee Replacement”. Lampang Medical Journal 36 (1):14-25. https://he01.tci-thaijo.org/index.php/LMJ/article/view/186428.