- 4.774 according to the Hindawai home page and Thomson ISI (2011, from 2012)
- based on the years that the printed ISSN 1741-427X was run by BMC
- the online version ISSN 1741-4288 is not registered!
- 2.964 according to Research Gate and the University Putra Malaysia
Some other researchers impressions: http://list.uvm.edu/cgi-bin/wa?A2=MEDLIB-L;wGArog;20110726180255-0700d