[1] CNIO, Spanish Natl Canc Res Ctr, Lymphoma Grp, Madrid, Spain
[2] Hosp Gen Univ Gregorio Maranon, Dept Pathol, Madrid, Spain
[3] MD Anderson Clin Canc Ctr, Dept Pathol, Madrid, Spain
[4] Hosp Gen Virgen Salud, Dept Pathol, Toledo, Spain
[5] Hosp Univ Virgen Arrixaca, Murcia, Spain
[6] Inst Enfermedades Neoplas, Dept Pathol, Lima, Peru