Kumar A, Kumari N. Evaluate the effectiveness of tonsillectomy and long-acting penicillin on the levels of the antistreptolysin O titer in children with recurrent tonsillitis. Int J Res Med Sci [Internet]. 2019 Apr. 26 [cited 2025 Oct. 12];7(5):1692-5. Available from: https://www.msjonline.org/index.php/ijrms/article/view/6223