作者: Jae Jeong Yang , Lisa Y Cho , Seung Hyun Ma , Kwang-Pil Ko , Aesun Shin
DOI: 10.1371/JOURNAL.PONE.0021155
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摘要: This study was supported by a grant from the Basic Science Research Program through National Foundation of Korea (NRF) funded Ministry Education, and Technology [KRF-2007-313-E00175] [NRF-2009-0066258]. The funders had no role in design, data collection analysis, decision to publish, or preparation manuscript.