Maw, S. L., N. Semakul, and K. 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, vol. 57, no. 3, June 2024, pp. 65-74, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/270909.