Genc, M., and T. Aslan. “An Investigation on ABO and Rh Blood Groups and HBsAg, Anti-HIV, VDRL Positivity”. Annals of Medical Research, vol. 4, no. 2, May 2021, pp. 0139-42, https://www.annalsmedres.org/index.php/aomr/article/view/2609.