Funding for this research was provided by:
University College London
Article History
Received: 22 March 2019
Revised: 31 May 2019
Accepted: 12 July 2019
First Online: 7 August 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is Dr. Francesco Giganti.
: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: No complex statistical methods were necessary for this paper.
: Written informed consent was not required for this study.
: Institutional Review Board approval was not required.
: • Review• Multicentre study