Frigyesi, Attila http://orcid.org/0000-0002-0155-4828
Boström, Lisa
Lengquist, Maria
Johnsson, Patrik
Lundberg, Oscar H. M.
Spångfors, Martin
Annborn, Martin
Cronberg, Tobias
Nielsen, Niklas
Levin, Helena
Friberg, Hans
Funding for this research was provided by:
Region Skåne (Regionalt forskningsstöd)
Governmental funding of clinical research within the NHS (2019:YF0053)
Biobanking andBioMolecular resources Research Infrastructure
Hans-Gabriel and Alice Trolle-Wachtmeister Foundation for Medical Research
European Union In-terreg programme IV A;
Lund University
Article History
Received: 18 February 2021
Accepted: 21 May 2021
First Online: 19 July 2021
Declarations
:
: Ethical approval was obtained from the Regional Ethical Review Board of Lund, Sweden (registration nos. 2015/267 and 2017/802). Patients and their next-of-kin were given the possibility to opt out.
: The authors declare that they have no competing interests. Proenkephalin A 119–159 was analysed free of charge by SphingoTec GmbH, Neuendorfstraße 15A, 16761 Hennigsdorf, Germany. The authors have no financial or any other interests in SphingoTec and have not been in any way influenced by the company in writing this research paper.