Retraction Note to: Cerebrospinal fluid ferritin in glioblastoma: evidence for tumor synthesis

The Editor-in-Chief has retracted this article [1]. An investigation by Kurume University has not been able to establish what the appropriate authorship should be because one of the authors, Yoshihiro Sato, is now deceased. As the appropriate authorship cannot be determined the Editor-in-Chief no longer has confidence in this article. Kurume University has also stated that it has not been possible to verify the data presented as none of the research material is available for investigation. We have not been able to contact Yoshiaki Honda, Takeshi Asoh, Kotaro Oizumi, Yuki Ohshima and Eiichiro Honda about this retraction.