Sieper, Joachim
Poddubnyy, Denis
Article History
First Online: 7 April 2016
Competing interests
: J.S. declares that he has received honoraria, speaker fees and/or consultancy payments from Abbvie, Janssen, Eli Lilly, MSD/Merck, Novartis, Pfizer, Roche and UCB. D.P. declares that he has received honoraria, speaker fees and/or consultancy payments from Abbvie, Bristol Myers Squibb, Eli Lilly, Janssen, MSD/Merck, Novartis, Pfizer, Roche and UCB.