Article History
Received: 12 July 2019
Accepted: 11 September 2019
First Online: 26 September 2019
Change Date: 18 April 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1007/s00167-021-06500-3
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: No funding has been received for this study.
: The study was approved by the regional ethics committee at the Karolinska Institute, Stockholm Sweden (reference no. 2006/404-31/3/2008/1541-32).
: Informed consent was obtained by each patient.