Thorax, Trachea, and Lung Ultrasonography in Emergency and Critical Care Medicine: Assessment of an Objective Structured Training Concept oleh Raoul Breitkreutz, Martina Dutiné, Patrick Scheiermann, Dorothea Hempel, Sandy Kujumdshiev, Hanns Ackermann, Florian Hartmut Seeger, Armin Seibel, Felix Walcher, Tim Oliver Hirche