Wälscher, Julia
Witt, Sabine
Schwarzkopf, Larissa
Kreuter, Michael
Article History
Received: 17 October 2019
Accepted: 10 March 2020
First Online: 26 March 2020
Ethics approval and consent to participate
: Such analyses do not require consultation of an ethics committee.
: Not applicable
: JW received personal fees from Boehringer Ingelheim and Roche.MK received research grants and personal fees from Boehringer Ingelheim and Roche.The other authors declare that they have no competing interests.