Burr, Sarah E ; Hart, John ; Samikwa, Lyson... https://researchonline.lshtm.ac.uk/id/eprint/4655199/1/Pgp3%20seroprevalence%20and%20associations%20with%20active%20trachoma%20and%20ocular%20Chlamydia%20trachomatis%20infection%20in%20Malawi%20cross-section.pdf.
,
2019