Assessment of Technical Difficulty and Complications of Urological Laparoscopic Operations According to "European Scoring System": 228 Cases. - Demirel, Fuat; Yalçınkaya, Fatih; Çakan, Murat; Topcuoğlu, Murat; Tuygun, Can; Altuğ, Uğur (Journal of Urological Surgery, 2015)