About the Author

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Ashish Chandra Cellular PathologyGuy's and St. Thomas' NHS Foundation Trust London, UKBarbara A. CrothersGynecologic, Breast and CytopathologyJoint Pathology CenterSilver Spring, MDUSADaniel F.I. KurtyczUniversity of Wisconsin - MadisonSchool of Medicine and Public HealthDepartment of Pathology and Laboratory Medicineand Wisconsin State Laboratory of HygieneMadison, WIUSAFernando SchmittInstitute of Molecular Pathology and Immunology of Porto University (IPATIMUP)Medical Faculty of Porto UniversityPortoPortugal