McAdam, K. G.
Tetteh, J.
Bishop, L.
Digard, H.
Cote, J.
Lubbe, S.
Liu, C.
Article History
Received: 14 January 2019
Accepted: 2 April 2020
First Online: 8 May 2020
Competing interests
: All authors were employees of British American Tobacco (BAT) at the time of the study. BAT funded the study.