Yammen APDS, โชติมล ป, ศรีสิงห์ ไ. The Development of a Spirometer with Pitot tube sensors. NUEJ [Internet]. 2017 Jul. 11 [cited 2024 May 6];12(1):47-54. Available from: https://ph01.tci-thaijo.org/index.php/nuej/article/view/63511