1Ocular Tumor Proton Therapy Program, Department of Radiation Oncology, University of California San Francisco, San Francisco, California
2Department of Ophthalmology, University of California, San Francisco, San Francisco, California
3Department of Radiation Oncology, Centre François Baclesse, Normandie Universite, Caen, France
4F.H. Burr Proton Therapy Center, Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
5National Proton Therapy Centre, Clatterbridge Cancer Centre, Wirral, United Kingdom
6Center for Proton Therapy, Paul Scherrer Institute, Villigen, Switzerland
7Institut Curie Proton Therapy Center, Orsay, France
8Centro de Protonterapia Quironsalud, Madrid, Spain
9BerlinProtonen am HZB, Charité – Universitätsmedizin Berlin, Berlin, Germany
10The Tumori Foundation, San Francisco, California
11Department of Radiation Oncology, University Hospital Essen, Essen, Germany
12Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom