Reply to the letter to the editor by R. Papke - Exner, Martin; Bhattacharya, Sanjay; Gebel, Jürgen; Goroncy-Bermes, Peter; Hartemann, Philippe; Heeg, Peter; Ilschner, Carola; Kramer, Axel; Ling, Moi Lin; Merkens, Wolfgang; Oltmanns, Peter; Pitten, Frank; et al. (German Medical Science GMS Publishing House, 2021)