- Correspondence to Dr Vitaly Smelov, Department of Laboratory Medicine, Karolinska Institutet, Forskningsgatan F56, Karolinska University Hospital Huddinge, Stockholm 141 86, Sweden;
- Received July 22, 2013
- Revised August 18, 2013
- Accepted August 21, 2013
- First published November 4, 2013.
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