WILMINGTON, MASSACHUSETTS, Feb 7, 2007 (CCNMatthews via COMTEX) -- DUSA Pharmaceuticals, Inc. (NASDAQ GM:DUSA) - Photodynamic Therapy (PDT) was a key topic at the 65th Annual American Academy of Dermatology (AAD) Meeting in Washington, D.C. Approximately 32 presentations and posters focused on the ...