Reverse innovation has been identified as a key emerging trend in global health systems.[9][10] Key health areas where low-income countries can offer solutions to medium and high-income country settings include, rural health service delivery; skills substitution; decentralisation of management; creative problem-solving; education in communicable disease control; innovation in mobile phone use; low technology simulation training; local product manufacture; health financing; and social entrepreneurship.[11] System-wide benefits may also be seen as accruing across every part of the World Health Organization Health Systems Framework, specifically the six building blocks of health systems: (1) service delivery; (2) health workforce; (3) health information; (4) medical products, vaccines, and technologies; (5) health financing; and (6) health leadership and governance. However, the applicability of developing country innovations in developed country settings remains relatively undocumented and further work needs to be undertaken to advance understanding of health innovation diffusion between countries.[12]