Sagiroglu, S., Oztarakci, H., Ozturk, P., Doganer, A., Tulay Koca, T., Bilal, N., Sarica, S. and Orhan, I. 2021. The association of ABO blood group and rh factor with recurrent aphthous ulceration . Annals of Medical Research. 25, 4 (May 2021), 0540–0544.