Primary research by Negesso Gebre and colleagues. DOI: 10.1371/journal.pone.0348978.
Primary research by Richmond Owusu Ateko and colleagues. DOI: 10.1371/journal.pone.0350185.
Primary research by Aboa Paul Koffi and colleagues. DOI: 10.1371/journal.pone.0348510.
Primary research by Gizachew Tadele Tiruneh and colleagues. DOI: 10.1371/journal.pone.0350270.
Primary research by Olaposi Joseph Olatoregun and colleagues. DOI: 10.1371/journal.pone.0350279.
Primary research by Eyerusalem Asfaw and colleagues. DOI: 10.1371/journal.pone.0350299.
Primary research by Obinna Ekwunife and colleagues. DOI: 10.1371/journal.pone.0350288.
Primary research by Emmanuel Nasinghe and colleagues. DOI: 10.1371/journal.pone.0348823.
Primary research by Kaleab Fikre and colleagues. DOI: 10.1371/journal.pone.0349510.
Primary research by Job Agba Opue and colleagues. DOI: 10.1371/journal.pone.0350644.