Thanaboonyawat, I. ., . P. . Chanprapaph, . A. . Puriyapan, and J. . Lattalapkul. “Association Between Breastfeeding Success Rate and Nipple Length and Diameter in Thai Pregnant Women”. Siriraj Medical Journal, vol. 64, no. 1, July 2020, pp. 18-21, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/244144.