| Study | Reason for exclusion |
|---|---|
| Baden 2021 | Exploratory analysis |
| Barrett 2021 | Secondary analysis |
| Ewer 2021 | Secondary analysis |
| Flaxman 2021 | Not randomized |
| Hsieh 2021 | Not randomized |
| Irfan 2021 | Commentary |
| Lazarus 2021 | Intervention not relevant to review |
| Patamatamkul 2021 | Not randomized |
| Ward 2021a | Intervention not relevant to review |
| Wu 2021b | Not randomized |
| Zdanowski 2021 | Not randomized |
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