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Supplemental Information

SI1: Reference goals and requirements

DOI: 10.7287/peerj.preprints.689v1/supp-1

SI2: Goals and requirements of a research network on liver cancer

DOI: 10.7287/peerj.preprints.689v1/supp-2

Additional Information

Competing Interests

The authors declare they have no competing interests.

Author Contributions

Matthias Ganzinger conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Petra Knaup wrote the paper, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

For the research described in this paper, ethics approval was not deemed necessary. This work involved no human subjects in the sense of medical research, as e.g. covered by the Declaration of Helsinki (World Medical Association, 2013). At no time patients were included for survey or interview. Data was only acquired from scientists regarding their work and data, but no personal or patient related data were gathered. Participants were not required to participate in this study. They consented by returning the questionnaire. No research was conducted outside Germany, the authors’ country of residence. However, in other countries the approval of an institutional review board or other authority might be necessary to apply the reference model.


This work was funded by the SFB/TRR 77 “Liver Cancer. From Molecular Pathogenesis to Targeted Therapies” of the Deutsche Forschungsgemeinschaft (DFG, The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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