Metterlein, Thomas, Sabrina Negele, Christian Wunder, Norbert Roewer, and Frank Schuster. 2021. “Ultrasound-Guided Percutaneous Dilatational Tracheotomy: A Fast and Safe Technique for Airway Management: Preliminary Report of a Novel Technique”. Acta Medico-Biotechnica 1 (1), 19-24. https://doi.org/10.18690/actabiomed.4.