About the Authors

Rafał R. Starzyński

Affiliation Institute of Genetics and Animal Breeding, Jastrzębiec, Poland

Coby M. M. Laarakkers

Affiliations Department of Laboratory Medicine (LGEM 830), Radboud University Medical Center, Nijmegen, The Netherlands, Hepcidinanalysis.com, Nijmegen, The Netherlands

Harold Tjalsma

Affiliations Department of Laboratory Medicine (LGEM 830), Radboud University Medical Center, Nijmegen, The Netherlands, Hepcidinanalysis.com, Nijmegen, The Netherlands

Dorine W. Swinkels

Affiliations Department of Laboratory Medicine (LGEM 830), Radboud University Medical Center, Nijmegen, The Netherlands, Hepcidinanalysis.com, Nijmegen, The Netherlands

Marek Pieszka

Affiliation National Research Institute of Animal Production, Balice, Poland

Agnieszka Styś

Affiliation Institute of Genetics and Animal Breeding, Jastrzębiec, Poland

Michał Mickiewicz

Affiliation Mifarmex Ltd, Michałów-Grabina, Poland

Paweł Lipiński

p.lipinski@ighz.pl

Affiliation Institute of Genetics and Animal Breeding, Jastrzębiec, Poland

Competing Interests

The authors have the following interests: Coby M.M. Laarakkers, Harold Tjalsma and Dorine W. Swinkels are employees of the Radboud University Medical Centre (Nijmegen, The Netherlands) that amongst others offers hepcidin measurements to the scientific, medical and pharmaceutical communities through the service unit "hepcidinanalysis.com" on a fee per sample basis. Michal Mickiewicz is employee of Mifarmex Ltd, who partly funded this study. There are no further patents, products in development or marketed products to declare. This does not alter our adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: RRS PL MP. Performed the experiments: RRS CMML HT MP AS. Analyzed the data: RRS DWS PL. Contributed reagents/materials/analysis tools: RRS DWS MP MM. Wrote the paper: RRS CMML HT DWS PL.