Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA

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: Steven R. Tahan, MD, Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215 (e-mail: [email protected]).