Funding for this research was provided by:
Helse Sør-Øst RHF (2016071)
Received: 21 December 2017
Accepted: 15 May 2018
First Online: 29 May 2018
Ethics approval and consent to participate
: The research biobanks have been registered according to national legislation (numbers 2781 and 236-2005-16141). The study is part of a project approved by the Regional Committee (REC) for Medical and Health Research Ethics (numbers 1.2005.1629 and S-09282c 2009/4958).
: RAL and GEL are inventors of a US provisional patent application filed in 2011, describing methylation of ZNF331 and five additional genes as biomarkers for detection of gastrointestinal cancers (61/451,198, INVEN-31899/US-1/PRO). The rest of the authors declare that they have no competing interests.
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