Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
PV indicates polycythemia vera; ET, essential thrombocythemia; PMF, Philadelphia-negative myeloproliferative neoplasm.
Sources: Spivak JL. Blood. 2002;100:4272–4290; Levine RL, et al. Nat Rev Cancer. 2007;7:673–683; Oh ST. Ther Adv Hematol. 2011;2:11-19; Vannucchi AM, et al. Haematologica. 2008;93:972–976.
