title: Metastatic gliosarcoma due to iatrogenic contamination during the surgery of gliosarcoma.
authors.affiliation: Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China. zhaojz@public.bta.net.cn
authors.forename: Jizong
authors.initials: J
authors.lastname: Zhao
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Wang