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| Methods | A single‐centre, double‐blind, randomised, placebo‐controlled cross‐over study |
| Participants | Participants with type 2 diabetes, mean age 59 + 6 (SD) years and mean HbA1c 7.7% + 0.8%, treated with exogenous insulin with or without oral antihyperglycaemic agents |
| Interventions | Participants received vildagliptin (50 mg twice a day) or placebo as add‐on to insulin for 4 weeks in random order with a 4‐week washout in between |
| Outcomes | Glucose, glucagon |
| Notes | ‐ |
