P. G. Borggaard, C. Kildegaard, C. B. Laursen, R. Bhatnagar, G. Volpicelli, and P. I. Pietersen, “Progress in lung ultrasound education: An updated systematic review”, Ultrasound J, vol. 18, no. 1, p. 18361, May 2026, doi: 10.5826/tuj.2026.18361.