Anagrelide-induced bone marrow changes during therapy of chronic myeloproliferative disorders with thrombocytosis. An immunohistochemical and morphometric study of sequential trephine biopsies - Thiele,J.; Kvasnicka,H.M.; Fuchs,N.; Brunnbauer,K.; Volkwein,N.; Schmitt-Graeff,A. (Haematologica, 2003)