- Reprints: Maia Stanisławska-Kubiak, MSc, Poznan University of Medical Sciences, Grunwaldzka 70, 61-780 Poznań, Poland. E-mail: .
- Received August 28, 2013, and in revised form May 8, 2014.
- Accepted for publication May 19, 2014.
- First published December 15, 2015.
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