Engsirorat T, Chaocheun S. “A Comparative Study of 2 Radivac Drain Placement Methods for Prevention of Complications After Modified Radical Mastectomy”. Journal of The Department of Medical Services, vol. 45, no. 2, Sept. 2020, pp. 66-73, https://he02.tci-thaijo.org/index.php/JDMS/article/view/245428.