In Regard to Qi et al

Affiliations

• ¹ Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland, now at Charité Universitätsmedizin, Berlin, Germany.
• ² Department of Radiation Oncology, Kantonsspital Winterthur, Winterthur, Switzerland.
• ³ SAKK Coordinating Center, Bern, Switzerland.
• ⁴ Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.