Fluorescence-guided surgery with 5-aminolevulinic acid for resection of malignant glioma: a randomised controlled multicentre phase III trial - Stummer, W; Pichlmeier, U; Meinel, T; Wiestler, O D; Zanella, F; Reulen, H J (Lancet Oncol, 2006)
; ALA-Glioma Study Group.