Bulletin of the World Health Organization
Volume 99(11);  2021 Nov 1
https://www.ncbi.nlm.nih.gov/pmc/issues/392423/

Behavioural science to improve effectiveness of HIV programmes, South Africa
Gavin George, Brendan Maughan-Brown, Harsha Thirumurthy
Bull World Health Organ. 2021 Nov 1; 99(11): 840–842. Published online 2021 Sep 28. doi: 10.2471/BLT.21.285626
PMCID: PMC8542262