[1] Republican Clin Perinatal Ctr, Ufa 450106, Russia
[2] Tyumen State Med Univ, Dept Obstet & Gynecol, 54 Odesskaya St, Tyumen 625023, Russia
[3] Peoples Friendship Univ Russia RUDN Univ, Educ & Sci Inst Neurosurg, Moscow, Russia
[4] Sechenov Univ, Sechenov Moscow State Med Univ 1, Dept Neurosurg, Moscow, Russia
[5] Tyumen State Med Univ, Dept Oncol Radiol & Radiotherapy, 54 Odesskaya St, Tyumen 625023, Russia
[6] Sichuan Univ, Gastr Canc Ctr, West China Hosp, Chengdu, Peoples R China
[7] Bashkir State Med Univ, Dept Internal Dis, Ufa 450008, Russia
[8] Harbin Med Univ, Dept Neurosurg, Affiliated Hosp 1, Harbin 150001, Peoples R China
[9] Peoples Friendship Univ Russia RUDN Univ, 6 Miklukho Maklaya St, Moscow 117198, Russia