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. 2017 Aug 22;2017(8):CD006580. doi: 10.1002/14651858.CD006580.pub5
Date Event Description
10 June 2016 New citation required but conclusions have not changed Author group changed and review updated to current Cochrane format.
Primary and secondary outcomes modified for clarification, and to reflect current asthma‐related outcomes.
Subgroup analysis ‐ adults versus children and types of education have been removed. Adults and children are now analysed separately.
New studies included (Valery 2010; Poureslami 2012; Grover 2016) including an additional 220 participants.
New 'Risk of bias' tool used.
SoF table included.
10 June 2016 New search has been performed Literature search updated to June 2016. An update literature search in July 2017 was not fully incorporated and three studies were added to studies awaiting classification.