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. Author manuscript; available in PMC: 2017 May 4.
Published in final edited form as: World J Pediatr. 2014 Dec 29;11(1):7–13. doi: 10.1007/s12519-014-0535-4

Table 1.

Risk of bias within studies

Risk of bias Abdel-Hady 1998[19] Singh 2006[20] Soe 2006[21] Rastogi 2011[26] Abdel Hady 2011[18] Todd 2012[23] Rastogi 2013[24]
Blinding of randomization Yes Unknown Unknown Not applicable Yes Yes Yes
Blinding of intervention No No No Not applicable No No No
Blinding of outcome Unknown Unknown Unknown Not applicable No Unknown Unknown