First author | Year | Country | GroupA/group B | Follow-up period (month) | Quality of the study |
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Gafar (2013) | 2013 | Egypt | 18/18 | 4 | 5 |
Nazeer (2012) | 2012 | Pakistan | 75/75 | 10 | 4 |
Bhatti (2011) | 2011 | Pakistan | 25/25 | 6 | 5 |
Sheikh (2015) | 2015 | Pakistan | 131/131 | 6 | 7 |
Filigeri (2004) | 2004 | Italy | 10/10 | 6 | 6 |
Kronborg (1985) | 1985 | Denmark | 20/17 | 12 | 5 |
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I infection, B bleeding, P pain, NA not available, Group A fistulectomy, Group B fistulotomy