1 Department of Dermatology, University of Cincinnati, Cincinnati, Ohio.
2 Clinical Laboratory for Epidemiology and Applied Research in Skin (CLEARS), Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
3 Clinical Laboratory for Epidemiology and Applied Research in Skin (CLEARS), Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts. Electronic address: clears@bidmc.harvard.edu.