Daniele Castellani 1 , Carlo Brocca 1 , Demetra Fuligni 1 , Carlo Giulioni 1 , Angelo Antezza 1 , Angelo Cormio 1 , Arianna Rubino 1 , Lucia Pitoni 1 , Virgilio De Stefano 1 , Giulio Milanese 1 , Luigi Cormio 2 3 , Bhaskar Kumar Somani 4 , Vineet Gauhar 5 , Andrea Benedetto Galosi 1
1Urology Unit, Azienda Ospedaliero-Universitaria delle Marche, Università Politecnica delle Marche, Ancona, Italy.
2Department of Urology and Renal Transplantation, Policlinico Riuniti, University of Foggia, Foggia, Italy.
3Department of Urology, Bonomo Teaching Hospital, Andria, Italy.
4Department of Urology, University Hospitals Southampton, NHS Trust, Southampton, United Kingdom.
5Department of Urology, Ng Teng Fong General Hospital, Singapore, Singapore.

Pilar Bahilo-Mateu 1 , Alberto Budia-Alba 1 2
1Lithotripsy and Endourology Unit, La Fe University and Polytechnic Hospital, Valencia, Spain.
2Lithotripsy and Endourology Unit, Urology Department, La Fe University and Polytechnic Hospital, Valencia, Spain.

Dongmei Liu # 1 , Junlong Liu # 1 , Zheming Li # 1 , Chengshan Ge 2 , Hongqiang Guo 2 , Shiyu Song 3 , Zhenhua Li 4 , Song Bai 5
1Department of Urology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, Liaoning, 110004, People's Republic of China.
2The Fifth Hospital of Liaoyang City, Liaoyang, China.
3Luhe Hospital of Yingkou City, Yingkou, China.
4Department of Urology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, Liaoning, 110004, People's Republic of China.
5Department of Urology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, Liaoning, 110004, People's Republic of China.
#Contributed equally.

Peter A Noble 1 , Blake D Hamilton 2 , Glenn Gerber 3
1Department of Microbiology, University of Alabama Birmingham, Birmingham, AL, United States of America.
2School of Medicine, University of Utah, Salt Lake City, UT, United States of America.
3University of Chicago Medical Center, Chicago, IL, United States of America.

Dor Golomb, Amir Cooper, Orit Raz
Department of Urology, Assuta Ashdod University Hospital, Ashdod, Israel.
Clalit Health Services, Central District, Israel.