*Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN

†Department of Laboratory Medicine and Pathology, Mayo Clinic, Scottsdale, AZ

Conflicts of Interest and Source of Funding: The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.

Correspondence: Jennifer M. Boland, MD, Division of Anatomic Pathology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905 (e-mail: [email protected]).