Sfoungaristos, S., I. Katafigiotis, and P. Perimenis. “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, vol. 7, no. 11-12, Nov. 2013, pp. e722-7, doi:10.5489/cuaj.374.