*Department of Pathology, Charles University, Faculty of Medicine in Plzen

†Bioptic Laboratory Ltd., Plzen, Czech Republic

‡Departments of Pathology and Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD

The authors have no funding or conflicts of interest to disclose.

Reprints: Lisa M. Rooper, MD, Johns Hopkins University School of Medicine, Baltimore 21231, MD (e-mail: [email protected]).