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In the original text, the term PCR was defined as polymerase chain reaction. The intended definition of the acronym was protein creatinine ratio and this has been amended in the text.
The electronic version of this article is the complete one and can be found at: http://f1000.com/prime/reports/m/7/24.1
The PDF of this article can be found at: http://f1000.com/prime/reports/m/7/24.1.pdf
