[1] Univ Zaragoza, Miguel Servet Univ Hosp, IIS Aragon, Zaragoza 50009, Spain
[2] Autonomus Univ Barcelona, Fundacio Puigvert, Barcelona 08193, Spain
[3] Univ Zaragoza, Escuela Univ Politecn Almunia, Appl Math Dept, La Almunia De Dona Godina 50100, Spain
[4] Hosp Univ La Paz, Madrid 28046, Spain
[5] Hosp Univ Puerta Del Mar, Cadiz 11009, Spain
[6] Hosp Badalona Germans Trias & Pujol, Badalona 08916, Spain
[7] Principe Asturias Univ Hosp, Alcala De Henares 28805, Spain
[8] Nuestra Senora Candelaria Univ Hosp, Santa Cruz De Tenerife 38010, Spain
[9] Virgen Rocio Univ Hosp, Seville 41013, Spain
[10] Granada Univ Hosp, Granada 18071, Spain
[11] Inst Valenciano Urol IVO, Valencia 46009, Spain
[12] Marques Valdecilla Univ Hosp, Santander 39008, Spain
[13] Hosp Univ 12 Octubre, Madrid 28041, Spain
[14] Hosp VITHAS 9 Octubre, Clin Urol, Valencia 46015, Spain