Funding for this research was provided by:
Received: 29 June 2020
Accepted: 15 November 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: The study was approved by the Regional Ethics Committee (Regionala etikprövningsnämnden i Lund) at Lund University, Sweden, with reference number 2018/197. All participants signed a written informed consent prior to examination.
: All participants signed a written consent to their anonymized images being published.
: FK is a co-founder and CEO of north medical. KMB and JT have no competing interests.