The Lancet Global Health, Volume 6, No. 9, Year 2018
BMJ open, Volume 10, No. 8, Year 2020
BMJ Global Health, Volume 5, No. 9, Year 2020
PLoS ONE, Volume 13, No. 4, Year 2018
PLoS ONE, Volume 3, No. 7, Year 2008
PLoS ONE, Volume 13, No. 11, Year 2018
Bulletin of the World Health Organization, Volume 88, No. 10, Year 2010
AIDS (London, England), Volume 34, No. 9, Year 2020