- Correspondence to Dr Stefano Mattioli, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy;
- Received June 18, 2017
- Revised September 1, 2017
- Accepted September 28, 2017
- First published November 13, 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.