| Study | Reason for exclusion |
|---|---|
| Brorson & Svensson 1998 | Not an RCT |
| Brorson 1997 | Not an RCT |
| Brorson 1998 | Not an RCT |
| Brorson 2000 | Not an RCT |
| Campisi 2006 | Unclear whether an RCT. No response from authors |
| Campisi 2014 | Abstract at a conference. Unclear whether results overlapped with another included study (Boccardo 2011). Incomplete details for methods used as full article of study was not published. |
| Ciudad 2017 | Not an RCT |
| Hou 2008 | Not a surgical intervention |
| Maldonado 2011 | Not an RCT |
| Saaristo 2012 | Not an RCT |
| Youssef 2010 | Poster abstract at a conference. Unclear whether an RCT (unlikely). Data not published elsewhere. No contact details found. |
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