Swarts, Daan C
Makarova, Kira
Wang, Yanli
Nakanishi, Kotaro
Ketting, René F
Koonin, Eugene V
Patel, Dinshaw J
van der Oost, John
Article History
Received: 1 April 2014
Accepted: 30 July 2014
First Online: 5 September 2014
Competing interests
: The authors declare no competing financial interests.