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3. World Health Organization 2012 http://apps.who.int/iris/bitstream/10665/76724/1/9789241548519_eng.pdf?ua=1
4. Pan American Health Organization 2009 http://www1.paho.org/hq/dmdocuments/2009/eligiblood09en.pdf?ua=1
5. Evidence-based selection criteria to protect blood donors;Eder;J Clin Apher,2010