[1] Yamagata Univ, Sch Med, Dept Neurosurg, Yamagata, Japan
[2] Yamagata Univ, Sch Med, Dept Mol Canc Sci, Yamagata, Japan
[3] Yamagata Univ, Sch Med, Dept Canc Genom Testing, Yamagata, Japan
[4] Yamagata Univ, Sch Med, Dept Ophthalmol & Visual Sci, Yamagata, Japan
[5] Yamagata Univ, Res Inst Promot Med Sci, Fac Med, Yamagata, Japan