R. M. Carney, M. Howells, A. Tanumafili, A. Matalavea, J. Gafa, and D. T. N. Leausa Toleafoa, “Comparing age and sex trends of chlamydia, gonorrhoea, hepatitis and syphilis infections in Samoa in 2012 and 2017”, Western Pac Surveill Response J, vol. 11, no. 1, Mar. 2020.