International Journal of Hematology: www.ijh-online.com Hematology: www.tandf.co.uk Blood: www.bloodjournal.org Haematologica / The Hematology Journal: www.haematologica.it Sociedade Brasileira de Hematologia e Hemoterapia: www.sbhh.com.br British Society for Haematology: www.b-s-h.org.uk Instituto de Hematología e Inmunología Cubano: www.sld.cu/sitios/ihi