Does pigmentation, hemosiderin and blood effect visible 5-ALA fluorescence in cerebral melanoma metastasis? - Marhold F; Roetzer-Pejrimovsky T; Scheichel F; Mercea PA; Mischkulnig M; Wadiura LI; Kiesel B; Weber M; Popadic B; Prihoda R; Hafner C; Widhalm G (Photodiagnosis and photodynamic therapy, 2022)