Text and Data Mining valid from 2019-04-26
Received: 28 March 2019
Accepted: 4 April 2019
First Online: 26 April 2019
Change Date: 26 February 2020
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Compliance with ethical standards
: FPC is a technical advisor to the World Health Organization, President and Trustee of the British and Irish Hypertension Society. PSS declares that he has no conflict of interest.