Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
Competing interests: None declared.
A comment by Anke Martiny, Peter Schoenhoefer and Angela Spelsberg for the Working Group on Health of Transparency International, German Chapter. All authors are members of Transparency International, German Chapter.