- Correspondence to Dr Alessandro Marinaccio, Epidemiology Unit, Occupational and Environmental Medicine, Epidemiology and Hygiene Department, Italian national workers compensation authority (INAIL), Rome 00143, Italy;
- Received 28 September 2016
- Revised 4 September 2017
- Accepted 5 October 2017
- Published online 21 December 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.