a
Molecular Imaging & Therapy Branch, National Cancer Center, 323 Ilsan-ro, Goyang-si, Korea
E-mail: ydchoi@ncc.re.kr
;
Fax: +82 31-920-2529
;
Tel: +82 31-920-2512
b
Center for Paralysis Research, Dept. of Basic Medical Science, Purdue University, USA