Funding for this research was provided by:
Gunnar Nilssons Cancerstiftelse (-)
Ernhold Lundströms stiftelse (-)
Einar och Inga Nilssons Stiftelse för Kirurgiforskning och Forskning inom Jordbruket (-)
Allmänna Sjukhusets i Malmö Stiftelse för Bekämpande av Cancer (-)
Skåne County Council's Research and Development Foundation (-)
Centralsjukhuset Kristianstad (-)
Received: 27 August 2018
Accepted: 12 June 2019
First Online: 25 June 2019
Ethics approval and consent to participate
: The present study was approved by the regional ethical review board of Lund University (reference 2013/821). All former patients were informed through adds in local newspapers, according to the instructions of the ethical review board, about the study and that they could at any time ask the researchers to omit their data from the analyses.
: Not applicable.
: The authors declare that they have no competing interests.