1 Department of Dermatology, University of Nebraska Medical Center, Omaha, Nebraska.
2 University of Arizona, College of Medicine - Tucson, Tucson, Arizona.
3 Division of Dermatology, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio.
4 Department of Dermatology, University of Nebraska Medical Center, Omaha, Nebraska; Department of Dermatology, Duke University School of Medicine, Durham, Nebraska.
5 Department of Dermatology, University of Nebraska Medical Center, Omaha, Nebraska. Electronic address: [email protected].