1. Laser Microbeam and Medical Program, Beckman Laser Institute, University of California–Irvine, Irvine
2. Department of Dermatology, University of California–Irvine, Irvine
3. JenLab GmbH, Jena, Germany4Department of Biophotonics and Laser Technology, Saarland University, Saarbrücken, Germany