[1] CHU Vaudois, Neurol Serv, CH-1011 Lausanne, Switzerland
[2] CHU Vaudois, Haematol Serv, CH-1011 Lausanne, Switzerland
[3] Univ Lausanne, Lausanne, Switzerland
[4] Univ Hosp Geneva, Dept Pathol, Geneva, Switzerland
[5] Univ Hosp Bern, Inselspital, Oncol Serv, Bern, Switzerland