Fig 3. Number of papers that met mERA essential criteria among the 10 selected studies.

No of studies in each component: Infrastructure [32, 42]; Technology platform [29, 31–34, 37–39]; Interoperability [29, 31–34, 38]; Intervention delivery [29, 31–39]; Intervention content [29, 31–34, 36–39]; Usability testing [29, 31–35, 37]; User feedback [31, 32, 38, 39]; Access of individual participants [38]; Cost assessment [29, 34]; Adoption inputs/programme entry [29, 31–39]; Limitations for delivery at scale [29, 35–38]; Contextual adaptability [31–35, 38]; Replicability [29, 32–34, 37, 38]; Data security [33, 34]; Compliance [29, 32, 34, 36, 38, 39]; Fidelity of the intervention [29, 32–34, 37–39].