Hong-Jun Park, Jin-Heon Hong, Hyun-Soo Kim*, Bo-Ra Kim, So-Yeon Park, Ki-Won Jo and Jae-Woo Kim
* Corresponding author: Hyun-Soo Kim hyskim@yonsei.ac.kr
BMC Medical Education 2013, 13:5 doi:10.1186/1472-6920-13-5