Do H Kim, Min-Dae Kim, Cheol-Woong Choi, Chung-Wook Chung, Seung H Ha, Cy H Kim, Yong-Ho Shim, Young-Il Jeong* and Dae H Kang*
* Corresponding authors: Young-Il Jeong nanomed@naver.com - Dae H Kang sulsulpul@yahoo.co.kr
Nanoscale Research Letters 2012, 7:91 doi:10.1186/1556-276X-7-91