1. Department of Laboratory Medicine and Pathobiology; St. Michael's Hospital; Toronto Canada
2. Section of Thoracic Surgery; University of Michigan Medical Center; Ann Arbor Michigan
3. Department of Morphology and Molecular Pathology; University Hospitals of K.U. Leuven; Leuven Belgium
4. St. Michael's Hospital; Toronto Canada
5. Institute of Pathology; University of Bern; Bern Switzerland
6. Department of Pathology; Spedali Civili; Brescia Italy
7. Département de Pathologie - Pathologie Gastro-intestinale; Centre Hospitalier de l'Université de Montréal; Montréal Canada
8. Department of Cellular Pathology; Oxford University Hospitals NHS Trust; Oxford United Kingdom
9. Department of Pathology; University of Washington; Seattle Washington
10. Institute of Pathology; Klinikum Bayreuth; Bayreuth Germany