- Correspondence to Dr Lamberto Manzoli, Palazzina di Odontoiatria, University of Chieti, Via dei Vestini 5, Chieti 66100, Italy;
- Received 11 November 2015
- Accepted 19 April 2016
- Published in print 1 May 2017.
- Published online 19 April 2017.
- Published first 6 June 2016.
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