Sagiroglu, S.; Oztarakci, H.; Ozturk, P.; Doganer, A.; Tulay Koca, T.; Bilal, N.; Sarica, S.; Orhan, I. The Association of ABO Blood Group and Rh Factor With Recurrent Aphthous Ulceration . Ann Med Res 2021, 25 (4), 0540-0544.