Kampitak, Kosol, Kittithep Sukkhong, Supinda Leeamornsiri, Suntaree Thitiwichienlert, and Pawarit Wanichsetakul. 2022. “Expense Evaluation of Pterygium Surgery at Thammasat University Hospital”. Thammasat University Hospital Journal Online 7 (2). Pathum Thani, Thailand:41-49. https://he02.tci-thaijo.org/index.php/TUHJ/article/view/257604.