This is BibTeX, Version 0.99c (TeX Live 2009/Debian)
The top-level auxiliary file: introduction.aux
Case mismatch error between cite keys Cardiov and cardiov
---line 4 of file introduction.aux
 : \citation{Karn,RRGT,Complex,Cardiov
 :                                    ,Tay2,Tay1}
I'm skipping whatever remains of this command
I found no \bibdata command---while reading file introduction.aux
I found no \bibstyle command---while reading file introduction.aux
You've used 37 entries,
            0 wiz_defined-function locations,
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(There were 3 error messages)
