| Authors | Country | Year | Delay | Average |
1 | Esan O et al. [30] | Nigeria | 2013 |
| 14.8 weeks |
2 | Yu B et al. [6] | Chine | 2013 | 10 - 12 weeks | 10.6 weeks |
3 | Abouchane et al. [14] | Maroc | 2015 |
| 4 mois |
4 | Gupta A et al. [21] | Inde | 2015 | 16 - 24 weeks | 4 mois |
5 | Tekin AÇ et al. [16] | Turkie | 2015 |
| 20.4 ± 4 weeks |
6 | Kitoko RA. [13] | RDC | 2016 |
| 195.9 jours |
7 | Notre étude | DRC | 2016 | 10 weeks |
|