Clinical evaluation of a method for detecting superficial transitional cell carcinoma of the bladder by light-induced fluorescence of protoporphyrin IX following topical application of 5-aminolevulinic acid: preliminary results. - Jichlinski,P.; Forrer,M.; Mizeret,J.; Glanzmann,T.; Braichotte,D.; Wagnières,G. (Lasers Surg Med, 1997)