Altman DG (2008) Assessing risk of bias in included
studies, in cochrane handbook for systematic reviews of interventions. In: Higgins JPG (ed) Cochrane
http://1971liberationwar.weebly.com/
uploads/2/7/4/6/2746835/6498799_orig.jpg
the surrender letter. Millions of
people were martyred in this war.
In Bangladesh