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| Methods | Randomised, controlled, multicentre trial |
| Participants | ED patients with difficult intravenous cannulation |
| Interventions | USG vs LM |
| Outcomes | Duration of USG and LM procedures Reason for using USG |
| Notes | This trial was registered in 2015, but the results have not been published and its status is unknown. |
ED: emergency department LM: landmark method USG: ultrasound guidance
