Akmatov, M. K.
Steffen, A.
Holstiege, J.
Hering, R.
Schulz, M.
Bätzing, J.
Article History
Received: 31 May 2018
Accepted: 29 October 2018
First Online: 19 November 2018
Competing Interests
: MKA, AS, JH, RH and MS declare that they have no competing interests. JB acted as consultant for the biopharmaceutical company CSL Behring about orphan diseases (on matters unrelated to this article). The corresponding author is responsible for submitting a competing interests statement on behalf of all authors of the paper.