1. Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA.
2. Laser Microbeam and Medical Program, Beckman Laser Institute, University of California, Irvine, Irvine, CA 92612, USA.
3. Department of Biomedical Engineering, University of Arkansas, 120 John A. White Jr. Engineering Hall, Fayetteville, AR 72701, USA.
4. Department of Preventive Medicine and Public Health, Faculty of Medicine, University of Malaga, 32 Louis Pasteur Boulevard, 29071 Málaga, Spain.
5. Department of Dermatology, University of California, Irvine, 1 Medical Plaza Drive, Irvine, CA 92697, USA.