- Correspondence to Charlotte Alfast Espensen, Copenhagen University Hospital, Rigshospitalet, Department of Ophthalmology, Department of Oncology, Section of Radiotherapy, Blegdamsvej 9, Copenhagen Ø 2100, Denmark;
- Received September 6, 2016
- Revised January 11, 2017
- Accepted January 14, 2017
- First published February 3, 2017.
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