Onnela, Jukka-Pekka
Waber, Benjamin N.
Pentland, Alex
Schnorf, Sebastian
Lazer, David
Article History
Received: 17 May 2013
Accepted: 21 May 2014
First Online: 15 July 2014
Change Date: 29 August 2014
Change Type: Update
Change Details: A correction has been published and is appended to both the HTML and PDF versions of this paper. The error has not been fixed in the paper.
Competing interests
: The authors declare no competing financial interests.