Sfoungaristos, S., Katafigiotis, I. and Perimenis, P. 2013. The role of PSA density to predict a pathological tumour upgrade between needle biopsy and radical prostatectomy for low risk clinical prostate cancer in the modified Gleason system era. Canadian Urological Association Journal. 7, 11-12 (Nov. 2013), e722–7. DOI:https://doi.org/10.5489/cuaj.374.