Prognostic value of gray to white matter ratios on brain computed tomography in comatose adults following out-of-hospital cardiac arrest of cardiac etiology. (November 2015) - Lee, Byung Kook; Jeung, Kyung Woon; Song, Kyoung Hwan; Jung, Yong Hun; Choi, Wook Jin; Kim, Soo Hyun; Youn, Chun Sung; Cho, In Soo; Lee, Dong Hun