Cobra, S. de B., Cardoso, R. M. and Rodrigues, M. P. (2016) “Usefulness of the second heart sound for predicting pulmonary hypertension in patients with interstitial lung disease”, São Paulo Medical Journal, 134(1), pp. 34–39. Available at: https://periodicosapm.emnuvens.com.br/spmj/article/view/924 (Accessed: 9 March 2025).