MAASDORP, S D. Normalising lung ultrasound. African Journal of Thoracic and Critical Care Medicine, [S. l.], v. 28, n. 4, p. 146–147, 2022. DOI: 10.7196/AJTCCM.2022.v28i4.289. Disponível em: https://www.samajournals.co.za/index.php/ajtccm/article/view/611. Acesso em: 23 apr. 2026.