Batbaatar, S., E. Yadamsuren, L. Sonom, O. Unshigbayar, M. Sharkhuu, and B. Badrakh. “Prevalence of Blue Spot Among Mongolian Newborn Infants”. Central Asian Journal of Medical Sciences, vol. 3, no. 3, Nov. 2017, pp. 259-68, doi:10.24079/cajms.2017.11.007.