Received: 17 August 2021
Accepted: 23 December 2021
First Online: 6 January 2022
: The PHI study was approved by the ethics review committee of the National Healthcare Group Domain Specific Review Board (Reference Number: 2015/00269). The study was conducted in accordance with the Declaration of Helsinki. Written informed consent was obtained from all individual participants after they were being informed about the study objectives and the safeguards put in place so that confidentiality of the collected data is maintained.
: Not applicable.
: The authors declare that they have no competing interests.