Different number of circulating CD34 + cells in essential thrombocythemia, prefibrotic/early primary myelofibrosis, and overt primary myelofibrosis. - Luque Paz D; Cottin L; Lippert E; Robin JB; Bescond C; Genevieve F; Boyer F; Quintin-Roue I; Rousselet MC; Burroni B; Hunault-Berger M; Ugo V; et al. (Annals of hematology, 2022)