Phimphasak, Chatchai, Hathaichanok Makphin, Dhissanuvach Chaikhot, Kittipun Aronpharungsunti, Jaturong Chimpalee, Arunrat Srithawong, and Sahachat Aueyingsak. 2025. “Airway clearance techniques for pneumonia patients: A survey of Thai physical therapists”. Journal of Associated Medical Sciences 58 (3):122-28. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/276941.