%0 Journal Article %A Nabhajit Mallik %A Manu Jamwal %A Ritika Sharma %A Namrata Singh %A Prashant Sharma %A Deepak Bansal %A Amita Trehan %A Sanjeev Chhabra %A Reena Das %T Ultra-rare Hb Regina (HBB:c.289C>G) with coinherited β-thalassaemia trait: solving the puzzle for extreme erythrocytosis %D 2022 %R 10.1136/jclinpath-2021-208013 %J Journal of Clinical Pathology %P jclinpath-2021-208013 %U https://jcp.bmj.com/content/jclinpath/early/2022/01/17/jclinpath-2021-208013.full.pdf