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. 2018 Feb 1;2018(2):CD004879. doi: 10.1002/14651858.CD004879.pub5

aa Bracco Neto 2009b.

Methods See Bracco Neto 2009a (Year 2 = 2002)
Participants See Bracco Neto 2009a
Interventions See Bracco Neto 2000a
Outcomes See Bracco Neto 2009a
Funding Source See Bracco Neto 2009a
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Second year of the same randomisation procedure
Allocation concealment (selection bias) Unclear risk No descriptions, second year of the same study design
Blinding (performance bias and detection bias) 
 All outcomes Unclear risk No descriptions, second year of the same study design
Incomplete outcome data (attrition bias) 
 All outcomes High risk Year of the same study design
Summary assessments High risk Plausible bias that raises some doubt about the results