Vannier, Jean
Schoenemann, Brigitte
Gillot, Thomas
Charbonnier, Sylvain
Clarkson, Euan
Article History
Received: 1 June 2015
Accepted: 30 November 2015
First Online: 19 January 2016
Change Date: 5 February 2016
Change Type: Update
Change Details: This paper was updated shortly after publication to correct errors in the positioning of panels in Figure 2, which led to some images partially overlapping. Both the PDF and HTML versions of the figure have been corrected.
Competing interests
: The authors declare no competing financial interests.