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Article History

Received: 12 September 2020

Accepted: 1 April 2021

First Online: 26 April 2021

Declarations

:

: The trial was performed in accordance with the Helsinki II Declaration and approved by the Danish Data Protection Agency (identification number 13/12076) and the Committee on Biomedical Research Ethics for the Region of Southern Denmark (identification number S-20150090). The trial is registered with ExternalRef removed, number NCT 02550184. The study protocol has previously been published [CitationRef removed]. All patients provided signed informed consent prior to participation.

: No individual person’s data are presented in this manuscript.

: M. Riishede is a member of the committee on ultrasound in the Danish Society for Emergency Medicine. M. Riishede has worked as an instructor on ultrasound courses for the ExternalRef removed, the University of Aarhus and the University of Southern Denmark, Odense, Denmark. SECMA Medical Innovation, Denmark, lend ultrasound machine to M. Riishede and assisted with operator expertise for the introduction and instructions of the investigators.N. Jacobsen: Dr. Jacobsen reports personal fees from The Region of Southern Denmark and Tryg Foundation for working as an instructor on a point-of-care lung ultrasound course for paramedics, outside the submitted work.A.T. Lassen is funded by an unrestricted grant from the philantropic fund, Tryg Foundation, given to the University at Southern Denmark.C.B. Laursen: Has received personal fee for giving lectures on an ultrasound course organized by GE Healthcare.K.N. Jeschke, P.I. Pietersen and G. Baatrup have no conflicts of interests to declare.