Xue, Jun, Yanan Zhang, Zhaohe Song, Lei Wang, and Baoyin Bo. “Effect of Family Nutrition Therapy on Elderly Patients With Chronic Obstructive Pulmonary Disease”. Journal of Geriatric Medicine 2, no. 1 (April 4, 2020): 11–15. Accessed December 22, 2024. https://journals.bilpubgroup.com/index.php/jgm/article/view/2242.