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| Study | Other papers reporting study |
| Asenlof 2005 | Asenlof 2006; Asenlof 2009 |
| Blair 1991 | Blair 1995 |
| Duncan 2003 | Duncan 2002 |
| Jonsdottir 2012 | Jonsdottir 2012b |
| Ostelo 2003 | Ostelo 2000; Ostelo 2004 |
| Scott 2004 | Ranta 2000; Setter‐Kline 2007; Watson 2001 |
| Sewell 2005 | Sewell 2001 |
