title: Essential thrombocythemia: clinical and laboratory characteristics at presentation.
mesh_terms: D000328:Adult; D000368:Aged; D001773:Blood Cells / Q000166:cytology; D001792:Blood Platelets / Q000502:physiology; D001854:Bone Marrow Cells; D005260:Female; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D013922:Thrombocytosis / Q000235:genetics / Q000473:pathology / Q000503:physiopathology*; D014805:Vitamin B 12 / Q000097:blood
chemical_list: D006454:Hemoglobins; D014805:Vitamin B 12