- Correspondence to Dr Giovanni Barbara, Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital—Building # 5, Via Massarenti, Bologna 9-I-40138, Italy;
- Received August 2, 2014
- Revised November 18, 2014
- Accepted November 20, 2014
- First published December 22, 2014.
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