Lee, Ping Yein http://orcid.org/0000-0002-0912-6043
Cheong, Ai Theng http://orcid.org/0000-0002-3895-530X
Ghazali, Sazlina Shariff
Salim, Hani
Wong, Jasmine http://orcid.org/0000-0001-6440-0431
Hussein, Norita
Ramli, Rizawati
Pinnock, Hilary http://orcid.org/0000-0002-5976-8386
Liew, Su May
Hanafi, Nik Sherina
Bakar, Ahmad Ihsan Abu
Ahad, Azainorsuzila Mohd
Pang, Yong Kek http://orcid.org/0000-0001-7883-8928
Chinna, Karuthan http://orcid.org/0000-0002-2035-344X
Khoo, Ee Ming http://orcid.org/0000-0003-3191-1264
Funding for this research was provided by:
NIHR Global Health Research Unit on Respiratory Health
Article History
Received: 8 March 2021
Accepted: 11 June 2021
First Online: 7 July 2021
Competing interests
: The authors declare no competing interests.