*Department of Pathology, Medical Faculty, Charles University, Charles University Hospital Plzen, Plzen Czech Republic
†Department of Pathology, Faculty of Medicine, University of British Columbia Royal Columbian Hospital, Vancouver BC, Canada
‡Department of Pathology, East University, Riga, Latvia
Conflicts of Interest and Source of Funding: Supported by the Charles University Research Fund (project number P36) and by Institutional Research Fund FN 00669806. The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.