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. 2020 Mar 31;11:319. doi: 10.3389/fimmu.2020.00319

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Copyright © 2020 Scarpa, Pulvirenti, Pecoraro, Vultaggio, Marasco, Ria, Altinier, Compagno, Firinu, Plebani, De Carli, Matucci, Vianello, Vacca, Spadaro, Quinti, Agostini, Milito and Cinetto.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Combined sFLC levels in the differential diagnosis of hypogammaglobulinemia. The scatter plot shows sFLC levels for 345 patients with CVID (red triangles), UAD (purple triangles), LPDs (blue circles) and non-hematological SID (green squares). Dashed lines represent reference for sFLC values.