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. International Journal of Research in Medical Sciences, [S. l.], v. 7, n. 5, p. 1692–1695, 2019. DOI: 10.18203/2320-6012.ijrms20191660. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/6223. Acesso em: 12 oct. 2025.