Text and Data Mining valid from 2014-12-15
Received: 30 May 2014
Accepted: 29 October 2014
First Online: 15 December 2014
Change Date: 6 February 2015
Change Type: Corrigendum
Change Details: In the version of this article initially published, the Hendrickson formula in the Figure 2 legend incorrectly had (2<i>N</i><sub>A</sub>/<i>N</i><sub>P</sub>)<sup>1/2</sup> divided by (<i>f</i>″/<i>Z</i><sub>eff</sub>); these terms should have been multiplied. The error has been corrected in the HTML and PDF versions of the article.
: G.S. and A.P. declare competing financial interests as employees of Boehringer Ingelheim Pharma GmbH & Co. KG.