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Zelickson, B. D., Kilmer, S. L., Bernstein, E., Chotzen, V. A., Dock, J., Mehregan, D., & Coles, C. (1999). Pulsed dye laser therapy for sun damaged skin. Lasers in Surgery and Medicine, 25(3), 229–236. doi:10.1002/(sici)1096-9101(1999)25:3<229::aid-lsm7>3.0.co;2-d 
10.1002/(sici)1096-9101(1999)25:3<229::aid-lsm7>3.0.co;2-d