Serum H2S as an indicator of exacerbation and pulmonary arterial hypertension in chronic obstructive pulmonary disease. Baghdad J. Biochem. Appl. Biol. Sci. [Internet]. 2023 Jun. 30 [cited 2025 Nov. 11];4(02):74-89. Available from: https://mail.bjbabs.org/index.php/bjbabs/article/view/191