- Correspondence to Dr Saeed Shoar, Development Association of Clinical Studies (DACS), Student Scientific Research Center (SSRC), Tehran University of Medical Sciences, School of Medicine, Poorsina Street, Qods Street, Keshavarz Boulevard, Tehran, Iran;
- Received September 20, 2012
- Accepted April 18, 2013
- First published May 10, 2013.
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