[1] Hop Gen Grand Yoff, Dept Urol & Androl, Dakar, Senegal
[2] Univ Iba Thiam Thies, Ecole Doctorale ED 2DS, Thies, Senegal
[3] Liberia Coll Phys & Surg, Dept Surg, Monrovia, Liberia
[4] Univ Harvard, Dana Farber Canc Inst, Boston, MA USA
[5] Hop Gen Grand Yoff, Dept Urol & Androl, POB 3270, Dakar, Senegal