Primary research by Juliet Gamuchirai Nyamasve and colleagues. DOI: 10.1371/journal.pone.0345316.
Primary research by Mesfin Wubishet Gurmu and colleagues. DOI: 10.1371/journal.pone.0345245.
Primary research by Obroma O Agumagu and colleagues. DOI: 10.1371/journal.pone.0345583.
Primary research by Jacqueline M Lauer and colleagues. DOI: 10.1371/journal.pone.0339819.
Primary research by Albert Dayor Piersson and colleagues. DOI: 10.1371/journal.pone.0330235.
Primary research by Julieth Kaaya and colleagues. DOI: 10.1371/journal.pone.0344986.
Primary research by Andamlak Gizaw Alamdo and colleagues. DOI: 10.1371/journal.pone.0345855.
Primary research by Ezekiel Musa and colleagues. DOI: 10.1371/journal.pone.0345743.
Primary research by Daniel Beshah and colleagues. DOI: 10.1371/journal.pone.0344856.
Primary research by Lebohang M. Mlambo and colleagues. DOI: 10.1371/journal.pone.0306848.