{Reference Type}: Letter {Title}: Hairy cell leukemia variant and WHO classification correspondence Re: 5th edition WHO classification haematolymphoid tumors: lymphoid neoplasms. {Author}: Grever M;Andritsos L;Anghelina M;Arons E;Banerji V;Barrientos J;Bhat SA;Blachly J;Broccoli A;Call T;Dearden C;Dietrich S;Else M;Epperla N;Fagarasanu A;Falini B;Forconi F;Gozzetti A;Hampel P;Hermel DJ;Iyengar S;Johnston JB;Juliusson G;Kreitman RJ;Lauria F;Lozanski G;Oakes CC;Parikh SA;Park J;Quest G;Rai K;Ravandi F;Robak T;Rogers KA;Saven A;Seymour JF;Tadmor T;Tallman MS;Tam CS;Tiacci E;Troussard X;Wörmann B;Zent CS;Zenz T;Zinzani PL; {Journal}: Leukemia {Volume}: 38 {Issue}: 7 {Year}: 2024 Jul 8 {Factor}: 12.883 {DOI}: 10.1038/s41375-024-02280-0