Transparency
Declaration of funding
This letter was written independently. The authors did not receive financial or professional help with the preparation of the manuscript.
Declaration of financial/other relationships
N.K. has disclosed that she has given talks, attended conferences and participated in trials sponsored by Amgen, Astra Zeneca, MSD, Novo Nordisk, Novartis and Sanofi. V.G.A. has disclosed that he has given talks, attended conferences and participated in trials sponsored by Amgen, Sanofi, MSD, Lilly and Angelini. D.P.M. has disclosed that he has given talks and attended conferences sponsored by MSD, AstraZeneca and Libytec.