Acknowledgements
This work was funded by a grant obtained from the INOVA Research Foundation (Forschungs- und Förderstiftung INOVA), Principality of Liechtenstein. The work of Mrs Elisabeth Lenggenhager as a study nurse is gratefully acknowledged. Furthermore, we thank Carmel Froidevaux-Walz, Franck Flahaut, Dominik Meier, Marietta Meirer, Ornella Weideli, Simone Inderbitzin, Iris Wälti, and Giovanna Cosentino for their excellent technical and administrative assistance.
Disclosure statement
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.