Santiago, Inês
Barata, Maria
Figueiredo, Nuno
Parés, Oriol
Henriques, Vanessa
Galzerano, António
Carvalho, Carlos
Matos, Celso
Heald, Richard J.
Article History
Received: 6 April 2019
Revised: 11 June 2019
Accepted: 27 June 2019
First Online: 26 July 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is Richard J. Heald, MD, CBE, MChir, FRCS.
: The authors declare that they have no competing interest.
: One of the authors has significant statistical expertise, and no complex statistical methods were necessary for this paper.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained.
: • This is a retrospective• observational• cross sectional study