Maw, Shoon Lae, Natthawat Semakul, and Khanittha Punturee. “Development of a simple HPLC method for the determination of urinary O-aminohippuric acid (OAH) and an establishment of OAH reference interval”. Journal of Associated Medical Sciences 57, no. 3 (June 29, 2024): 65–74. accessed September 18, 2026. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/270909.