MONTGOMERYVILLE, Pa.--(BUSINESS WIRE)--PhotoMedex, Inc. (Nasdaq: PHMD) announced today that John Koo, MD will be the principal investigator in a clinical study assessing the efficacy of the XTRAC Velocity® excimer laser in the treatment of generalized psoriasis when used in combination with Clobex® spray. Dr. Koo is Professor and Vice Chairman in the Department of Dermatology at the University of California San Francisco Medical Center. Spearheading the study will be Dr. Koo’s colleague, Tina Bhutani, MD.
