Al-Ani RT. Study of the Relationship Between Blood Group and Group A Beta -Hemolytic Streptococci Isolated from Patients with Tonsillitis. Iraqi Journal of Science [Internet]. 2022 Jun. 24 [cited 2025 Dec. 8];57(2A):855-61. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7448