The editors wish to add the following information regarding the ethical conduct of the authors' research, which was inadvertently excluded from the above-referenced article by Edward M. Mannina, Greg K. Bartlett, and Kevin P. McMullen, Extended Volumetric Follow-up of Juvenile Pilocytic Astrocytomas Treated with Proton Beam Therapy.

Approval for human subjects research was obtained by an institutional review board (IRB) or equivalent ethics committee and conducted in compliance with IJPT ethical practices.