In compliance with the US National Institutes of Health (NIH) Public Access Policy all peer-reviewed articles published from research funded by NIH to be deposited in the PubMed Central archive, from April 7th 2008. (Source BioMed Central Blog : http://blogs.openaccesscentral.com/blogs/bmcblog/entry/mandatory_nih_public_...) Swapan Kumar Patra Research Scholar School of Social Science Center for Studies in Science Policy Jawaharlal Nehru University New Delhi-110067 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.