Rittharomya, Jintana, Suparb Aree-ue, Porntip Malathum, Pisamai Orathai, Basia Belza, and Viroj Kawinwonggowit. 2020. “The Effectiveness of Preoperative Quadriceps Exercise and Diet Control Program for Older Adults Waiting for Total Knee Arthroplasty: A Randomized Controlled Trial”. Pacific Rim International Journal of Nursing Research 24 (4):485-501. https://he02.tci-thaijo.org/index.php/PRIJNR/article/view/228023.