[1] Hematologist Head City Ctr Treatment Patients, City Polyclin 37, St Petersburg 191186, Russia
[2] Childrens Reg Clin Hosp, Head Childrens Reg Oncohematol Ctr, Minist Hlth Krasnodar Reg, Krasnodar 350007, Russia
[3] Dmitriy Rogachev Natl Med Res Ctr Pediat Hematol, Hematologist Consultat Dept, Pediatrician Short Term Treatment Inpatient Dept, Moscow 117997, Russia
[4] Natl Med Res Ctr Hematol, Head Dept Hemostasis Disorders, Moscow 125167, Russia
[5] Natl Med Res Ctr Hematol, Altai Div, Minist Hlth Russian Federat, Moscow 125167, Russia
[6] Raisa Gorbacheva Mem Res Inst Pediat Oncol Hemato, St Petersburg 1999022, Russia
[7] Morozovskaya Childrens City Clin Hosp, Moscow Hlth Dept, Hematologist Hematol Dept, Moscow 119049, Russia
[8] Natl Res Ctr Hematol, Dept Traumatol & Orthoped, Moscow 125167, Russia
[9] Odintsovo Reg Hosp, Head Children Hematol Dept, Odintsovo 143003, Russia