[1] Univ Oran, Childrens Hosp Canastel, Fac Med, Dept Visceral Surg, Oran, Algeria
[2] Univ Oran, Childrens Hosp Canastel, Fac Med, Dept Epidemiol, Oran, Algeria
[3] Univ Oran, Fac Med, Dept Surg, EHU Oran, Oran, Algeria
[4] Univ Oran, Fac Med, Dept Urol, EHU Oran, Oran, Algeria
[5] Responsible Med Sch, Dept Hlth, Oran, Algeria
[6] Dept Hlth, Oran, Algeria
[7] Univ Djillali Liabes Sidi Bel Abbes, Fac Med, Dept Pediat Surg, CHU Sidi Bel Abbes, Sidi Bel Abbes, Algeria