Objective To understand the clinical feature and natural course of polycythemia vera ( PV ).

目的　了解真性红细胞增多症 ( PV ) 患者临床特点及疾病自然过程.

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Objective To explore the clinical features and treatment of polycythemia vera ( PV ) complicating stroke.

目的探讨真性红细胞增多症 ( PV ) 并发脑卒中的临床特点及治疗方法.

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Past medical history included polycythemia, thrombocytosis, chronically low blood pressure, neuropathy and extremity deep vein thrombosis.

过去史包括红细胞增多症, 血小板溶解症, 长期低血压, 神经元病和上肢深静脉血栓.

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Objective To explore the effect of polycythemia on retinopathy of prematurity ( ROP ).

目的观察红细胞增多症对早产儿视网膜病变 ( ROP ) 的影响.

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