Seymour JF, Marcus R, Davies A, Gallop-Evans E, Grigg A, Haynes A, Herold M, Illmer T, Nilsson-Ehle H, Sökler M, Dünzinger U, Nielsen T, Launonen A, Hiddemann W. Association of early disease progression and very poor survival in the GALLIUM study in follicular lymphoma: benefit of obinutuzumab in reducing the rate of early progression. Haematologica 2019; 104(6):1202-1208; https://doi.org/10.3324/haematol.2018.209015.