1. A history of haemopoietic cell transplantation;Thomas;Br J Haematol,1999
2. Hong Kong Cancer Registry. 2017. Available at: http://www3.ha.org.hk/cancereg/allagesresult.asp. Accessed June, 2018.
3. Bone Marrow Donors Worldwide. BMDW Annual Report Statistics. 2016. Available at: https://www.bmdw.org/bmdw/news. Accessed June, 2018.
4. World Marrow Donor Day. Number of marrow donors and cord blood units. 2017. Available at: https://worldmarrowdonorday.org/. Accessed June, 2018.
5. Umbilical cord blood stem cells: what to expect;Zhong;Ann N Y Acad Sci,2010