Ngugi, David Kamanda http://orcid.org/0000-0002-0442-4279
Blom, Jochen
Stepanauskas, Ramunas http://orcid.org/0000-0003-4458-3108
Stingl, Ulrich http://orcid.org/0000-0002-0684-2597
Article History
Received: 10 March 2015
Revised: 5 October 2015
Accepted: 25 October 2015
First Online: 11 December 2015
Competing interests
: The authors declare no conflict of interest.