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In page Mission Barrio Adentro:

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After the Barrio Adentro's primary care network went nationwide in 2004, moves to expand beyond primary care soon followed. What became known as "Barrio Adentro I" focused on primary health care. "Barrio Adentro II" focused on secondary care, in three main areas: Comprehensive Diagnosis Centers (for more advanced diagnoses), Comprehensive Rehabilitation Centers (for people with disabilities, another social deficit uncovered by Barrio Adentro I—there were only 78 public sector centers in 1998), and Advanced Technology Centers (for more advanced treatment). Plans were made for 600 each of the first two facilities (each serving a population of approximately 40,000 to 50,000) and 35 of the latter (with at least one in each state).[1]