About the Authors

Gerrit G. Tamminga

Roles Data curation, Formal analysis, Software, Writing – original draft, Writing – review & editing

Affiliation Biotrack, Leeuwarden, The Netherlands

Gijsbert J. Jansen

Roles Conceptualization, Data curation, Formal analysis, Methodology, Visualization, Writing – original draft, Writing – review & editing

Affiliation Biotrack, Leeuwarden, The Netherlands

Marit Wiersma

Roles Data curation, Formal analysis, Methodology, Visualization, Writing – original draft, Writing – review & editing

m.wiersma@biotrack.nl

Affiliation Biotrack, Leeuwarden, The Netherlands

Competing Interests

GGT, GJJ and MW have read the journal’s policy and these authors of this manuscript have the following competing interests: employed by the commercial company Biotrack and patents issued (WO 2010/040371 A1, EP 08874964.3) This does not alter our adherence to PLOS ONE policies on sharing data and materials.