Researchers’ attitudes to the 3Rs—An upturned hierarchy?

• Nuno Henrique Franco ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Visualization, Writing – original draft

  * E-mail: nfranco@ibmc.up.pt

  Affiliations i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal, IBMC – Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal

  http://orcid.org/0000-0003-4015-0532

  ⨯
• Peter Sandøe,

  Roles Conceptualization, Methodology, Supervision, Writing – review & editing

  Affiliations Department of Veterinary and Animal Sciences, University of Copenhagen, Copenhagen, Denmark, Department of Food and Resource Economics, University of Copenhagen, Copenhagen, Denmark

  ⨯
• I. Anna S. Olsson

  Roles Conceptualization, Investigation, Methodology, Resources, Supervision, Validation, Writing – review & editing

  Affiliations i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal, IBMC – Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal

  ⨯