Bellos, Ioannis
Fitrou, Georgia
Pergialiotis, Vasilios http://orcid.org/0000-0003-4510-1633
Thomakos, Nikolaos
Perrea, Despina N.
Daskalakis, Georgios
Article History
Received: 28 December 2017
Revised: 3 February 2018
Accepted: 7 February 2018
First Online: 23 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The present systematic review and meta-analysis is based on aggregated data that were retrieved from studies already retrieved. We did not collect individual patient data and did not have direct contact with patients included.