1 Department of Pathology, Immunology & Laboratory Medicine, Rutgers New Jersey Medical School, Newark, New Jersey.
2 Department of Dermatology, Robert Wood Johnson School of Medicine, Somerset, New Jersey.
3 Department of Obstetrics and Gynecology, Pennsylvania Hospital, University of Pennsylvania, Philadelphia, Pennsylvania.
4 Division of Pediatrics, Section of Dermatology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.