Ulmschneider, Martin B.
Ulmschneider, Jakob P.
Schiller, Nina
Wallace, B. A.
von Heijne, Gunnar
White, Stephen H.
Article History
Received: 28 January 2014
Accepted: 30 July 2014
First Online: 10 September 2014
Competing interests
: The authors declare no competing financial interests.