Activin-A is elevated in patients with thalassemia major and double heterozygous sickle cell/beta-thalassemia and correlates with markers of hemolysis and bone mineral density. - Voskaridou, Ersi; Ntanasis-Stathopoulos, Ioannis; Christoulas, Dimitrios; Dimopoulou, Maria; Komninaka, Veroniki; Repa, Konstantina; Papatheodorou, Athanasios; Terpos, Evangelos (Annals of Hematology, 2019)