Yücel Cem, Salih Budak, Erdem Kısa, Orcun Celik, and Zafer Kozacıoglu. 2018. “The Sufficiency of 6 Core Sextant Prostate Biopsy in Patients With Prostate Specific Antigen (PSA) Values over 20 ng/ML”. Archivio Italiano Di Urologia E Andrologia 90 (2):104-6. https://doi.org/10.4081/aiua.2018.2.104.