Na, Hyemin, Yeseong Lee, Sang-Kwon Lee, Hojung Choi, Youngwon Lee, and Kija Lee. 2023. “The breed-specific vertebral heart score and vertebral left atrial size in toy breed dogs”. The Thai Journal of Veterinary Medicine 52 (4):753-59. https://he01.tci-thaijo.org/index.php/tjvm/article/view/261504.