False negative rate of direct immunofluorescence in bullous pemphigoid does not significantly differ by anatomic site

Affiliations

• ¹ Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts.
• ² Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts; Harvard Combined Dermatology Residency Program, Boston, Massachusetts.
• ³ Division of Dermatology, David Geffen School of Medicine at the University of California, Los Angeles, California.
• ⁴ Harvard Medical School, Boston, Massachusetts; Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts.
• ⁵ Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: stchen@mgb.org.