Received: 22 January 2019
Accepted: 9 March 2020
First Online: 20 March 2020
Ethics approval and consent to participate
: The data collection procedures used in these original studies were in accordance with the ethical standards of the respective institutional research committees, the 1964 Helsinki Declaration, and its later amendments. Informed consent was obtained from all participants included in the original studies and all data was strictly confidential and anonymous. In the context of this ethical approval, access and permission to utilise the data from the original studies was received from the dataset owners at Trinity College Dublin and University College Cork, Ireland.
: The authors declare that they have no competing interests.