Funding for this research was provided by:
Luitpold Pharmaceuticals, Inc.
Received: 22 September 2017
Accepted: 9 July 2018
First Online: 28 July 2018
Compliance with ethical standards
: Gary R. Lichtenstein has served as a consultant to Luitpold Pharmaceuticals, Inc., and Jane E. Onken has served on a Steering Committee and Advisory Board for Luitpold Pharmaceuticals, Inc.
: All procedures performed involving human participants performed in the four studies included in this post hoc analysis were in accordance with the ethical standards of the institutional review boards at each center and with the 1964 Helsinki Declaration (NCT00703937 and NCT00704353, NCT00704028, and NCT00982007; ExternalRef removed).
: Informed consent was obtained for all individual participants included in the four studies in the current analysis.