1. Department of Dermatology, School of Medicine , Oregon Health and Science University , Portland , OR , USA
2. Division of Vascular Surgery , Oregon Health and Science University , Portland , OR , USA
3. Division of Plastic and Reconstructive Surgery , Oregon Health and Science University , Portland , OR , USA
4. Department of Dermatology , Emory University , Atlanta , GA , USA
5. Department of Dermatology , Oregon Health and Science University , Portland , OR , USA