| Study | Reason for exclusion |
|---|---|
| Chen 2008 | Not a randomised or quasi‐randomised trial |
| Hope 1982 | Not a randomised or quasi‐randomised trial |
| Liu 2010 | Did not meet inclusion criteria for gestational age combined with birthweight (infants < 35 weeks' gestation were included). Mean birthweight in intervention group was 2165 g and in control group was 2188 g. No information available on whether these infants were ventilated or not (infants with gestation 33‐36 weeks can only be included in this review if ventilated and birthweight was < 1750 g) |
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