**2. Literature review methodology**

The literature review is a survey of scholarly sources and a good literature review summarises, evaluates, synthesises and analyses to give a clear understanding knowledge of the proposed subject of the study [11]. The context of the study adopted a narrative literature review methodology. Narrative literature reviews identify and summarize the previously published studies, and avoid duplications; further seek new study areas [12]. The adopting of the narrative literature review methodology allowed the researcher to identify, evaluate, synthesise and critically analyse the published studies relevant to the topic of study. Moreover, the narrative literature review assisted with drafting an evidence-based global and national perspective picture underpinning the digital health utilisation by patients and health care providers.
