Text and Data Mining valid from 2019-11-12
Received: 15 April 2018
Accepted: 15 October 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: This cross-sectional study was approved by the Institutional Review Board of the Salvatore Maugeri Foundation, Scientific Institute of Lissone, Lissone (Monza Brianza), Italy; date of approval: 20/12/2014. All of the patients gave their written approval to participate.
: Not applicable.
: The authors declare that they have no competing interests.