| Study | Reason for exclusion |
|---|---|
| Atilla 2011 | Wrong participant population |
| Barst 2010 | Wrong intervention |
| Chueamuangphan 2014 | Wrong participant population |
| Detterickh 2015 | Wrong study design |
| Lunt 2016 | Wrong study design |
| NCT00023296 | Wrong study design |
| Styles 2006 | Wrong indication |
| Styles 2012 | Wrong indication |
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