| Study | Sample size | Duration months | Reduction in MBL at 12 months | Expulsion |
| Our study 2011 | 6 | 12 | 83.3% | 1 (18%) |
| Sayed et al., 2010 | 29 | 12 | 91% | 3 (10%) |
| Murat et al., 2010 | 40 | 6 | 85% | - |
| Shawki et al., 2009 | 67 | 12 | 88% | - |
| Soysal et al., 2005 | 32 | 12 | 90% | 10 (31%) |
| Grigoreva et al., 2003 | 69 | 12 | 84% | 4 (5.79%) |
| Mercorio et al., 2003 | 32 | 12 | 69% | 4 (12.5%) |