About the Authors

Zsuzsanna Varga

Affiliation Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland

Joachim Diebold

Affiliation Institute of Pathology, Cantonal Hospital Luzern, Luzern, Switzerland

Corina Dommann-Scherrer

Affiliation Institute of Pathology, Cantonal Hospital Winterthur, Winterthur, Switzerland

Harald Frick

Affiliation Institute of Pathology, Cantonal Hospital Graubünden, Chur, Switzerland

Daniela Kaup

Affiliation Cantonal Institute of Pathology, Liestal Hospital, Liestal, Switzerland

Aurelia Noske

Affiliation Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland

Ellen Obermann

Affiliation Institute of Pathology, University Hospital, Basel, Switzerland

Christian Ohlschlegel

Affiliation Institute of Pathology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland

Barbara Padberg

Affiliation Institute of Pathology, Cantonal Hospital Graubünden, Chur, Switzerland

Christiane Rakozy

Affiliation Pathology Institute for Biopsy Diagnostics, Zurich, Switzerland

Sara Sancho Oliver

Affiliation Medical Laboratory, Pathology, Promed SA, Marly, Switzerland

Sylviane Schobinger-Clement

Affiliation Medical Laboratory, Pathology, Promed SA, Marly, Switzerland

Heide Schreiber-Facklam

Affiliation Institute of Pathology, Municipal Hospital Konstanz, Konstanz, Germany

Gad Singer

Affiliation Institute of Pathology, Cantonal Hospital Baden, Baden, Switzerland

Coya Tapia

Affiliation Institute of Pathology, Inselspital, Bern, Switzerland

Urs Wagner

Affiliation Pathology, Unilabs Mittelland, Bern, Switzerland

Mauro G. Mastropasqua

Affiliation Division of Anatomic Pathology, European Institute of Oncology and University of Milan, Milano, Italy

Giuseppe Viale

Affiliation Division of Anatomic Pathology, European Institute of Oncology and University of Milan, Milano, Italy

Hans-Anton Lehr

Hans-Anton.Lehr@chuv.ch

Affiliation Institute of Pathology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland

Competing Interests

The authors are employed either by university departments, cantonal hospitals ( = public sector) or by private pathology laboratories (Promed and Unilabs). However, this does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ZV JD CDS HF DK AN EO CO BP CR SSO SSC HSF GS CT UW MGM GV HAL. Performed the experiments: ZV JD CDS HF DK AN EO CO BP CR SSO SSC HSF GS CT UW MGM GV HAL. Analyzed the data: ZV HAL. Wrote the paper: ZV HAL.