Jiarpinitnun J, Thongsukh V, Trongtokit K, Kochasan J. The Invention of Anesthetic Gas Return Connector for Anesthetic Machine. Res Med J [internet]. 2014 Mar. 30 [cited 2026 Sep. 20];37(1):2-8. available from: https://he02.tci-thaijo.org/index.php/ramajournal/article/view/95269