At the end of second paragraph of “Materials and Methods” section, the original sentence is “The clinical target volume (CTV) was obtained by adding 0.5 cm to GTV. Additional 0.5-1 cm was added to CTV to create planning target volume (PTV).” The correct one should be “The clinical target volume (CTV) was obtained by adding 0.5-1 cm to GTV. Additional 0.3-0.5 cm was added to CTV to create planning target volume (PTV).” The change does not affect the outcome of the original paper. On behalf of all the co-authors in this paper, I deeply apologize for my lack of oversight and missing this error.
*DOI of original article: http://dx.doi.org/10.4143/crt.2020.437