Tuvayanon, W., Silchai, P. and Akaraviputh, T. (2008) “Oasis Sharp Counter”, Siriraj Medical Journal, 60(2), pp. 60–61. available at: https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246356 (accessed: 17 September 2026).