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. 2023 Apr 25;14:1159351. doi: 10.3389/fimmu.2023.1159351

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Copyright © 2023 Rosi-Schumacher, Baker, Waris, Seiffert-Sinha and Sinha

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Age of Onset of PV by Country. Darker shading signifies a younger age of onset of (A) PV or (B) BP. Countries with more than one shaded color signify that more than one study had results that fell into different categories.