Chuatrakoon, Busaba, Sureeporn Uthaikhup, Todsaporn Pichaiya, and Somporn Sungkarat. 2019. “Relationship Between Cognition, Disease Severity and Balance Performance in Individuals With Chronic Obstructive Pulmonary Disease”. Journal of Associated Medical Sciences 52 (2):132-38. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/171172.