Pfreundschuh, Moritz
Alsteens, David
Wieneke, Ralph
Zhang, Cheng
Coughlin, Shaun R.
Tampé, Robert
Kobilka, Brian K.
Müller, Daniel J.
Article History
Received: 19 March 2015
Accepted: 11 October 2015
First Online: 12 November 2015
Competing interests
: The authors declare no competing financial interests.