ลิขิตการไพบูลย์ ฐ. A comparative study of the efficiency of the ability to trap air in the breath by analyzing the amount of carbon dioxide between using the nasal oxygen device with a carbon dioxide measurement connector and the invention from 10 cc sterile water ampule. TUHJ [internet]. 2022 Dec. 30 [cited 2026 Sep. 21];7(3):23-40. available from: https://he02.tci-thaijo.org/index.php/TUHJ/article/view/252622