- Correspondence to Professor Francesco Violi, I Clinica Medica, Sapienza University of Rome, Viale del Policlinico 155, Roma 00161, Italy;
- Accepted April 24, 2012
- First published May 23, 2012.
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.