Funding for this research was provided by:
Actelion Pharmaceuticals
Article History
Received: 12 November 2020
Accepted: 12 November 2020
First Online: 16 December 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: Professor Robert Tulloh has received unrestricted educational, travel or research grants from Bayer, Pfizer, Actelion, Janssen and GSK. Zoya Rashid has received a travel grant from Actelion pharmaceuticals.