SINDHU, Naru Sai; L, Muthukumaran; S, Chandrasekar; NATARAJAN, Sekar; R, Sridhar; N, Meenakshi. Association between Forced Expiratory Volume in 1 second /Forced Vital Capacity ratio and Main Pulmonary Artery /Ascending Aorta ratio in Chronic Obstructive Pulmonary Disease Patients – A Hospital based Observational Study. Journal of Neonatal Surgery, Lahore, Pakistan, v. 14, n. 25S, p. 687–693, 2025. Disponível em: https://jneonatalsurg.com/index.php/jns/article/view/6195. Acesso em: 25 may. 2026.