RAJU, D. S. S. K.; MUNTA, A. K.; LALITHA, D. L. A study on the serum arginase and nitrate levels in association with Fev1/Fvc ratio in chronic obstructive pulmonary disease. International journal of health sciences, [S. l.], v. 6, n. S9, p. 4803–4811, 2021. DOI: 10.53730/ijhs.v6nS9.14067. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/14067. Acesso em: 4 jun. 2026.