Skip to main content
. 2000 Apr 24;2000(2):CD002139. doi: 10.1002/14651858.CD002139

zh(radrt) poor PS.

Methods  
Participants  
Interventions  
Outcomes  
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Low risk A ‐ Adequate