Erratum to: In reply to Kashid et al

Affiliations

• ¹ Department of Radiation Oncology, University Medical Center Groningen, University of Groningen; 9700 RB Groningen, The Netherlands. Electronic address: r.steenbakkers@umcg.nl.
• ² Department of Radiation Oncology, University Medical Center Groningen, University of Groningen; 9700 RB Groningen, The Netherlands.
• ³ Department of Radiation Oncology, Radiotherapiegroep; 7416SE Deventer, The Netherlands.
• ⁴ Department of Radiation Oncology, University Medical Center Groningen, University of Groningen; 9700 RB Groningen, The Netherlands; Department of Biomedical Sciences of Cell and Systems, Section Molecular Cell Biology, University Medical Center Groningen, University of Groningen; 9713AV Groningen, The Netherlands.
• ⁵ Department of Radiation Oncology, University Medical Center Groningen, University of Groningen; 9700 RB Groningen, The Netherlands. Electronic address: p.van.luijk@umcg.nl.