Text and Data Mining valid from 2020-02-13
Received: 10 September 2019
Accepted: 1 February 2020
First Online: 13 February 2020
Ethics approval and consent to participate
: This study was performed in compliance with the Helsinki Declaration on ethical principles for handling human tissue specimens, with all EU and national regulations and requirements. Written informed consent was obtained from participants. Ethical permission for the study was granted by the Ethics Committee at Lund University (Ref 2010/684, 2012/661, 2015/266, 2017/320).
: Consent for publication was obtained from included participants.
: The authors declare that they have no competing interests.