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Retrospective studies
| Author | Year | Patients (n) |
|---|---|---|
| Yim (9) | 2001 | 29 |
| Razzaq (10) | 2001 | 23 |
| Aviv (18) | 2002 | 15 |
| Maetani (15) | 2002 | 23 |
| Adler (2) | 2002 | 36 |
| M. Kaw (19) | 2003 | 18 |
| Mittal (6) | 2003 | 16 |
| Stawawy (20) | 2003 | 24 |
| G.H. Kim (24) | 2004 | 49 |
| Lindsay (25) | 2004 | 40 |
| Telford (29) | 2004 | 176 |
| Mosler (30) | 2005 | 36 |
| Bessoud (32) | 2005 | 72 |
| Del Piano (31) | 2005 | 24 |
| Maetani (7) | 2005 | 22 |
| Maire (33) | 2006 | 24 |
| Kazi (34) | 2006 | 23 |
| Kiely (37) | 2007 | 30 |
| T.O. Kim (40) | 2007 | 53 |
| J. van Hooft (38) | 2007 | 62 |
| Jeurnink (8) | 2007 | 53 |
