Received: 6 November 2019
Accepted: 14 July 2020
First Online: 22 September 2020
Availability of data and material
: The datasets used and analysed during the current study are available from the corresponding author on reasonable request.
: The Human Research Ethics Committee reviewed the protocol, including the methodology and statistical methods to be employed, and approval was obtained under the number S12/04/089. This was a retrospective review and consent was waivered.
: Not applicable.
: There is no conflict of interest to declare by all authors. No competing financial interests exist.