International Society of Blood Transfusion
http://www.isbt-web.org

World Blood Donor Day, Barcelona 2010
http://www.wbdd.org

National Blood Transfusion Institute of Serbia
http://www.nbti.org.rs

Blood Transfusion Institute of Nis
http://www.transfuzijanis.rs

Blood Transfusion Institute of Vojvodina
http://www.transfuzija.org.rs

Serbian Bone Marrow Donor Registry
http://www.rdks.org.rs