Rosato, Valentina
Temple, Norman J.
La Vecchia, Carlo
Castellan, Giorgio
Tavani, Alessandra
Guercio, Valentina
Article History
Received: 3 July 2017
Accepted: 5 November 2017
First Online: 25 November 2017
Compliance with ethical standards
:
: For this systematic review and meta-analysis there were no funding sources.
: The authors declare that they have no conflict of interest.