Saengkieo, U., Kiatsilapanan, A., & Sawangkoon, S. (2026). A combination of hyoscyamine and theophylline for treatment of sick sinus syndrome in a dog. The Thai Journal of Veterinary Medicine, 56(4), 1–8. retrieved from https://he01.tci-thaijo.org/index.php/tjvm/article/view/292395