Article History
Received: 22 May 2019
Accepted: 23 October 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: The study followed the Declaration of Helsinki and both the Coordinating Ethics Committee (journal number 136/E6/2006) and the Ethics Committee of the Department of Surgery (148/E6/05) of the Hospital District of Helsinki and Uusimaa approved the study protocol. Informed written consent was obtained from each patient.
: Informed written consent was obtained from all subjects where they agreed to an anonymous analysis and publication of the findings.
: The authors declare that they have no competing interests.