| Study | Reason for exclusion |
|---|---|
| Bertino 2009 | Case‐control study |
| Cobb 2004 | Case‐control study |
| Dubey 2018 | Cohort study |
| Elia 2022 | Before‐and‐after comparison study |
| Malhotra 1992 | Prospective observational study |
| Mihatsch 2002 | Prospective observational study |
| Purohit 2022 | Case‐control study |
| Riskin 2017 | Case‐control study |
| Staub 2019 | Before‐and‐after comparison study |
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