Fluorosis detected by trephine biopsy

¹Division of Hematology, Department of Medicine, University of Toronto, Sunnybrook Health Sciences Centre, ²Department of Medicial Imaging, University of Toronto, Sunnybrook Health Sciences Centre, ³Department of Clinical Pathology, University of Toronto, Sunnybrook Health Sciences Centre, ⁴Divison of Infectious Diseases, Department of Medicine, University of Toronto, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.