| Study | Reason for exclusion |
|---|---|
| Afshari 2011a | Not a primary study |
| Afshari 2011b | Not a primary study |
| Anonymous 2007 | Unobtainable |
| Anonymous 2008 | Unobtainable |
| Avikainen 1977 | Not a DTA study |
| Blackbourne 2012 | Not a primary study |
| Cap 2011 | Outcome not in line with inclusion criteria |
| Carroll 2009 | Outcome not in line with inclusion criteria |
| Chandler 2010 | Intervention not in line with inclusion criteria |
| Cheng 2009 | Outcome not in line with inclusion criteria |
| Cotton 2011 | Not a DTA study |
| Cotton 2012a | Condition not in line with inclusion criteria |
| Cotton 2012b | Not DTA study |
| Craft 2008 | Not a DTA study |
| Curry 2011 | Not a DTA study |
| Davenport 2009 | Not a DTA study |
| Davenport 2011b | Not a DTA study |
| David 2011 | Not a primary study |
| Differding 2011 | Outcome not in line with inclusion criteria |
| Ettinger 1970 | Population not in line with inclusion criteria |
| Floccard 2012 | Intervention not in line with inclusion criteria |
| Franschman 2012 | Intervention not in line with inclusion criteria |
| Frink 2009 | Not a primary study |
| Hagemo 2013a | Not a primary study |
| Hagemo 2013b | Reference standard not in line with inclusion criteria |
| Jambor 2009 | Not primary study |
| Jeger 2009 | Not a DTA study |
| Jeger 2010 | Not a primary study |
| Jeger 2011a | Abstract ‐ author contacted |
| Jeger 2011b | Duplicate of Jeger 2011a |
| Jeger 2012 | Not a DTA study (FT of Jeger 2011a) |
| Kashuk 2010 | Abstract ‐ author contacted |
| Kashuk 2012 | Not DTA study (FT of Kashuk 2010) |
| Kaufmann 1995 | Abstract ‐ author contacted |
| McCann 2011 | Not a DTA study |
| Messenger 2011 | Not a DTA study |
| Nystrup 2011 | Not a DTA study |
| Ostrowski 2011 | Not a DTA study |
| Ostrowski 2012a | Not a DTA study |
| Ostrowski 2012b | Not a DTA study |
| Park 2008 | Not a DTA study |
| Park 2009 | Outcome not in line with inclusion criteria |
| Pezold 2012 | Outcome not in line with inclusion criteria |
| Plotkin 2008 | Outcome not in line with inclusion criteria |
| Raza 2011a | Outcome not in line with inclusion criteria |
| Raza 2011b | Outcome not in line with inclusion criteria |
| Raza 2013 | Outcome not in line with inclusion criteria |
| Rizoli 2011 | Outcome not in line with inclusion criteria |
| Rourke 2012 | Outcome not in line with inclusion criteria |
| Schochl 2005 | Unobtainable |
| Schochl 2007 | Abstract of Schochl 2009 ‐ not a DTA study |
| Schochl 2009 | Not a DTA study |
| Schochl 2011a | Not a DTA study |
| Schochl 2011b | Not a DTA study |
| Schochl 2011c | Not a DTA study |
| Schochl 2012a | Not a DTA study |
| Schochl 2012b | Not a DTA study |
| Schreiber 2005 | Not a DTA study |
| Schreiber 2009 | Not a DTA study |
| Shah 2012 | Not a DTA study |
| Sharma 2010 | Population not in line with inclusion criteria |
| Sixta 2013 | Not a DTA study |
| Solomon 2011 | Not a DTA study |
| Spoors 2011 | Not a DTA study |
| Tanaka 2012 | Not a DTA study |
| Tapia 2013 | Not a DTA study |
| Theusinger 2011 | Not a DTA study |
| Theusinger 2013 | Not a DTA study |
| Watters 2010 | Outcome not in line with inclusion criteria |
| Weiss 2011 | Not a DTA study |
| Windelov 2011 | Not a DTA study |
| Wohlauer 2012 | Not a DTA study |
| Woolley 2010 | Not a DTA study |
Abbreviation
FT: full text