Global Adoption, Expansion, and Progress of eHealth

A major obstacle to the global adoption, expansion, and progress of eHealth is the lack of available healthcare workers trained in informatics and adequately prepared to work in this growing field. What unique skill set(s) are needed to work in this evolving discipline? What obstacles present themselves as informatics expands globally (e.g., education/language barriers, differences in terminology, legal issues, access to technology, regulatory policies, etc.)? How might these challenges be overcome?