ZAFAR, H.; HASSANZAI, F. U.; MANSOOR, F.; HUSSAIN, S. S. Persistent left superior vena cava draining into the left atrium presenting as secondary polycythaemia: a case report. Journal of the Pakistan Medical Association, [S. l.], v. 76, n. 11, p. 1947–1949, 2026. DOI: 10.47391/JPMA.30312. Disponível em: https://ojs.jpma.org.pk/index.php/public_html/article/view/30312. Acesso em: 1 nov. 2026.