- Correspondence to Dr Carol L Shields,Oncology Service, Wills Eye Hospital, Philadelphia, Pennsylvania, USA;
- Received April 2, 2019
- Revised May 6, 2019
- Accepted May 10, 2019
- First published June 8, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.