PhotoMedex Announces clinical trial using Xtrac speeds (R) Laser for the treatment of severe generalized psoriasis PhotoMedex, Inc. (Nasdaq: PHMD) announced that John Koo, MD is the principal investigator in a clinical trial evaluating the efficacy of the Xtrac excimer laser speed ® in the treatment of psoriasis general when used in combination with Clobex ® spray. Dr. Koo is professor and vice chair of the Department of Dermatology, University of California, San Francisco Medical Center …
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