title: [Essential thrombocythemia--a comparative study on polycythemia vera].
mesh_terms: D000328:Adult; D000368:Aged; D001853:Bone Marrow / Q000473:pathology; D003114:Colony-Forming Units Assay; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010976:Platelet Count; D011087:Polycythemia Vera / Q000097:blood / Q000175:diagnosis*; D013920:Thrombocythemia, Essential / Q000097:blood / Q000175:diagnosis*