Funding for this research was provided by:
Stiftelsen Dorothea Olivia, Karl Walter och Jarl Walter Perkléns Minne
Governmental Competitive Funds for Medical Research
Received: 11 January 2021
Accepted: 28 April 2021
First Online: 13 May 2021
: The Department of Abdominal Surgery at Helsinki University Hospital approved the conduction of the study.
: The authors declare no competing interests.