After publication of this work , we noted that we had inadvertently included Bodmer Alexandre, Castiglione-Gertsch Monica and Pierre Yves Dietrich as authors of the study. The list of authors has now been corrected and the Authors' contributions and Competing interests section modified accordingly.
The authors declare that they have no competing interests.
MB drafted the manuscript. EH T participated in the design of the study. MB reviewed the final manuscript and revised it critically for important intellectual content. All authors read and approved the final manuscript.