Measuring equity of access to eye health outreach camps in rural Malawi. - Trotignon, Guillaume; Engels, Thomas; Saeed Ali, Shaneez; Mugwang'a, Ziporah; Jones, Iain; Bechange, Stevens; Kaminyoghe, Effie; Adera, Tesfaye Haileselassie; Schmidt, Elena (PLoS ONE, 2022)