1. Department of DermatologyUniversity of California Davis Medical Center Sacramento California
2. Dermatology Service, Sacramento VA Medical CenterVA Northern California Health Care System Mather California
3. Department of Surgery, Podiatry Section, Sacramento VA Medical CenterVA Northern California Health Care System Mather California
4. Department of DermatologyUniversity of Miami Miller School of Medicine Miami Florida
5. Division of Biostatistics, Department of Public Health SciencesUniversity of California Davis California