Document is current

Article History

Received: 14 February 2022

Accepted: 23 June 2022

First Online: 11 July 2022

Declarations

:

: The study design and procedures were approved by the Ethics Committee of the University Hospital Cologne, Cologne, Germany (no. 19-1232_2). All methods were performed in accordance with the relevant guidelines and regulations (Declaration of Helsinki; Ethics Committee of the University Hospital Cologne). Participation was voluntary and comprehensive study information was included in the cover letter. As data collection and analyses were considered to be anonymous, a signed declaration of consent was not required; returning the questionnaire to the IMVR implied informed consent to participation. This procedure was defined in the data protection concept and approved by the by the Ethics Committee of the University Hospital Cologne, Germany.

: Not applicable.

: The authors declare that they have no competing interests.