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Contributors SNC: data collection and analysis, drafting of manuscript. HBS: data analysis, drafting and final approval of manuscript. EGK: critical review and final approval of manuscript.
Competing interests None.
Ethics approval Anonymous data were obtained from the mandatory oncology database maintained by the Scottish Ocular Oncology Service.
Provenance and peer review Not commissioned; internally peer reviewed.
Data sharing statement Mandatory dataset available for inspection.
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