MAASDORP, S. D. . Normalising lung ultrasound. African Journal of Thoracic and Critical Care Medicine, [S. l.], v. 28, n. 4, p. 146–147, 2023. Disponível em: https://www.ajol.info/index.php/ajtccm/article/view/243775. Acesso em: 28 sep. 2026.