Lapsomthob, Nabthong, and Patipat Thinwang. “Subgroups in the ABO blood group system”. Health Science Clinical Research 39, no. 2 (December 28, 2024): 56–65. accessed September 12, 2026. https://he02.tci-thaijo.org/index.php/hscr/article/view/269383.