Departments of *Laboratory Medicine and Pathology

†Medicine, Division of Nephrology, Hamad Medical Corporation, Doha, Qatar

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

All figures can be viewed online in color at www.anatomicpathology.com.

Reprints: Mohammed Akhtar, MD, FCAP, FRCPA, FRCPath, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar (e-mail: [email protected]).