However, MLP have been used for many years in a number of countries in Africa and Asia. In the colonial and immediate postcolonial periods they were often regarded as a stop-gap measure, and consequently neither properly integrated into health systems, nor adequately planned for and managed.
Sin embargo, se han utilizado a los TSNI durante muchos años en varios países de África y Asia; en los períodos postcoloniales se consideraban como una medida provisional y, en consecuencia, no se integraron correctamente en los sistemas de salud, ni fueron adecuadamente planificados y administrados.