Chaijaroonkhanarak, W., P. Amarttayakong, W. Pannangron, J. Umka, M. Namking, K. Chaisiwamongkol, H. Kondo, and P. Prachaney. “Incidence of the Sternalis Muscle in Northeastern Thais”. Srinagarind Medical Journal, vol. 28, no. 1, Aug. 2013, pp. 62-65, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11103.