- Correspondence to Dr Esen Karamursel Akpek, Director, Ocular Surface Diseases and Dry Eye Clinic, The Wilmer Eye Institute, 600 North Wolfe Street, Maumenee Building #317, Baltimore, MD 21287-9238, USA;
- Received January 26, 2016
- Revised June 10, 2016
- Accepted July 3, 2016
- First published July 22, 2016.
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