Patanaponsukum, Suchawadee, Supaporn Chinchai, and Nuntigar Sonsuwan. 2019. “Validity and Reliability of the Pediatric Voice Handicap Index: Thai Version”. Journal of Associated Medical Sciences 52 (2):120-24. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/165081.