Yoichi Katayama, MD, PhD
Professor and Chairman of the Department of Neurological Surgery
Nihon University School of Medicine
Oyaguchi Kamimachi 30-1
Itabashi-ku
Tokyo 173-8610,
Japan
Tel.: + 81-3-3972-8111 Ext.: 2480
Fax: + 81-3-3554-0425
E-mail: ykatayam@med.nihon-u.ac.jp