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2. World Health Organization. WHO calls for increase in voluntary blood donors to save millions of lives 2018. Available from: http://www.who.int/news-room/headlines/10-06-2015-who-calls-for-increase-in-voluntary-blood-donors-to-save-millions-of-lives. Accessed February 21,2020 .

3. World Health Organization. Blood safety and availability 2017. [Available from: http://www.who.int/en/news-room/fact-sheets/detail/blood-safety-and-availability. Accessed February 21,2020.

4. World Health Organization W. Global Consultation: 100% Voluntary Non–Remunerated Donation of Blood and Blood Components. Melbourne, Australia; 2009. Available from: https://www.who.int/bloodsafety/ReportGlobalConsultation2009onVNRBD.pdf?ua=1.

5. World Health Organization & International Federation of Red Cross and Red Crescent Societies. (2010). Towards 100% Voluntary Blood Donation: A global framework for action. Available from: https://apps.who.int/iris/bitstream/handle/10665/44359/9789241599696_eng.pdf.