Thapanakulsak, D., and C. Soorapanth. “India Ink Stain in Incisional Wound of Soft Tissue Tumor”. Vajira Medical Journal : Journal of Urban Medicine, vol. 52, no. 3, Sept. 2011, pp. 243-8, https://he02.tci-thaijo.org/index.php/VMED/article/view/367.