[1] Massachusetts Gen Hosp, Div Dermatopathol, Boston, MA 02114 USA
[2] Clin Americas, San Juan, PR USA
[3] Univ Navarra Clin, Navarra, Spain
[4] Harvard Univ, Boston, MA 02115 USA
[5] Arkansas Childrens Hosp, Little Rock, AR 72202 USA
[6] Univ Arkansas Med Sci, Little Rock, AR 72205 USA