I-gumnerd , J., J. Chaiard, and W. Udomkhamsuk. “Relieving the Burden Among Caregivers of Cancer Patients: A Systematic Review”. Nursing Journal CMU, vol. 47, no. 1, Mar. 2020, pp. 164-7, https://he02.tci-thaijo.org/index.php/cmunursing/article/view/240742.