BEHERA, A.; H., M. K.; BAKSHI, R.; SHARMA, A. Ginkgo leaf sign on X-ray chest due to subcutaneous emphysema in a COVID-19 patient. International Journal of Advances in Medicine, [S. l.], v. 8, n. 8, p. 1223–1225, 2021. DOI: 10.18203/2349-3933.ijam20212872. Disponível em: https://www.ijmedicine.com/index.php/ijam/article/view/2952. Acesso em: 2 jan. 2026.