1. United Nations (2006) World Population Ageing 1950–2050. Population Studies, No.207. New York: United Nations.
2. Epidemiology of red blood cell utilization;EC Vamvakas;Transfus Med Rev,1996
3. Hong Kong Red Cross (2012) Annual Report. Available: http://www.redcross.org.hk/sec_comm_files/Annual%20Reports/AR2011/p19to24.pdf. Accessed 2012 Aug 17.
4. A synopsis of current care of thalassaemia major patients in Hong Kong;WY Au;Hong Kong Med J,2011
5. Decreased infection-related mortality and improved survival in severe aplastic anemia in the past two decades;JM Valdez;Clin Infect Dis,2011