Article History
Received: 18 June 2019
Revised: 1 August 2019
Accepted: 7 August 2019
First Online: 16 August 2019
Compliance with ethical standards
:
: Dr Pauling has undertaken consultancy work and received speaker honoraria from Actelion pharmaceuticals. Dr Hughes has received speaker honoraria from Actelion pharmaceuticals. Dr Pope has undertaken consultancy work for AbbVie, Actelion, Baxter, Bayer, BMS, Lilly, Merck, Novartis, Pfizer, Roche, Sandoz, Sanofi and UCB.