how many procedures are needed to achieve learning curve of Millin simple laparoscopic prostatectomy?

1. Lombardo, R.
2. Zarraonandiaandraca, A.
3. Tema, G.
4. Cancrini, F.
5. Carrion Valencia, A.
6. González-Dacal, J.A.
7. Rodríguez Núñez, H.
8. Plazaalonso, C.
9. Giulianelli, R.
10. Denunzio, C.
11. Tubaro, A.
12. Ruibalmoldes, M.