Health System Profile (PDF) (s. 8) 2008. Health Policies and Systems Unit, Health Systems Strengthening Area (HSS/HP) of the Pan American Health Organization/World Health Organization (PAHO/WHO).. Arkistoitu 4.2.2016. Viitattu 20.10.2012.
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Health System Profile (PDF) (s. 8) 2008. Health Policies and Systems Unit, Health Systems Strengthening Area (HSS/HP) of the Pan American Health Organization/World Health Organization (PAHO/WHO).. Arkistoitu 4.2.2016. Viitattu 20.10.2012.