Effects of Topical Boswellic Acid on Photo and Age-Damaged Skin: Clinical, Biophysical, and Echographic Evaluations in a Double-Blind, Randomized, Split-Face Study - Pedretti, Alessandra; Capezzera, Rossana; Zane, Cristina; Facchinetti, Elena; Calzavara-Pinton, Piergiacomo (Planta Medica, 2010)