Erratum to:

Bundesgesundheitsbl (2017) 60:556–562

DOI: 10.1007/s00103-017-2537-6

The article “Ethische Aspekte der klinischen Prüfung bei seltenen Erkrankungen”, written by Joerg Hasford and Armin Koch, was originally published Online First without open access. After publication in volume 60, issue 5, page 556–562 the author decided to opt for Open Choice and to make the article an open access publication. Therefore, the copyright of the article has been changed to © The Author(s) 2017 and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.