Funding for this research was provided by:
Päivikki ja Sakari Sohlbergin Säätiö
Academy of Finland (317061)
Sigrid Juselius Foundation
Institutional grants from Helsinki University Hospital (TYH2017241, TYH2013343, TYH2016243)
Text and Data Mining valid from 2019-09-11
Received: 15 May 2019
Accepted: 29 August 2019
First Online: 11 September 2019
Ethics approval and consent to participate
: The Ethics Committee of the Department of Surgery at the Helsinki University Hospital gave nationwide approval for the study (reference number: 18/13/03/02/2010) and accepted the use of deferred consent from the patient or next of kin with written informed consent obtained as soon as possible.
: Not applicable.
: The authors declare that they have no competing interests.