[1] Inst Nacl Neurol & Neurocirurgia Manuel Velasco S, Dept Neurosurg, Mexico City 14269, DF, Mexico
[2] Inst Nacl Neurol & Neurocirurgia Manuel Velasco S, Dept Infect Dis, Mexico City 14269, DF, Mexico
[3] Inst Nacl Neurol & Neurocirurgia Manuel Velasco S, Dept Otorhinolaryngol, Mexico City 14269, DF, Mexico