Present: The current funding information is incomplete. Correct: The complete funding information is given below.
Bibliographical noteFunding Information:
This study was supported partly by Astra Zeneca Korea Ltd. This study was supported in part by a grant from the Korea Health Technology R&D Project, Ministry of Health & Welfare, Republic of Korea (HI12C1440, B. C. Cho), a grant from the Korean Health Technology R&D Project, Ministry of Health & Welfare, Republic of Korea (HI13C1948 to H.R. Kim) and a faculty research grant of Yonsei University College of Medicine for 2012(6-2012-0134, B.C. Cho.)..
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