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*Department of Ophthalmology, Chungnam National University Hospital, Daejeon, Republic of Korea
†Research Institute for Medical Science, Chungnam National University College of Medicine, Daejeon, Republic of Korea.
Reprint requests: Jung Y. Kim, MD, Department of Ophthalmology, Chungnam National University Hospital, #640 Daesa-dong, Jung-gu, Daejeon 301-721, South Korea; e-mail: firstname.lastname@example.org
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This study was financially supported by a research fund from Chungnam National University in 2010.
None of the authors have any conflicting interests to disclose.