Methods
A 53-questions online survey was finalized on April 6th, 2020 using available recommendations [1], [2], [3], [4], [5], [6], [7], [8] and distributed by email on April 07th, 2020 to the representatives of the 30 Swiss radiation oncology departments. The survey was finalized on April 24th, 2020 with answers from 22 out of 30 Swiss radiation oncology departments (Suppl. Fig. 1).