One of the most important success factors of clinical applications is consideration of human-computer interaction in design of the user interface.
Applications with poor usability, contribute to adverse medical erros and even patient deaths (see this for instance)
The key question here is that "to what extent do openEHR current implementations (tools/frameworks) support desiging usable GUIs?"
As an example I have uploaded a sample of a GUI prototype that has been under usability evaluations.
Does ny of the existing tools/framework support developing such a GUI?