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Are B12 Injections Safe? Side Effects & Risks Explained Polycythemia is a condition characterized by an increased number of red blood cells in the blood. There are two main types: primary (or polycythemia vera) and secondary (or secondary polycythemia). The symptoms Pernicious Anemia Symptoms Causes Treatment Dr Karun Hematology Understanding polycythemia vera diagnosis and management What Is Polycythemia Vera? Symptoms, Causes, Diagnosis, and Treatment
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