Figure 4: School attendance rate of children aged 10-14 years. Solid lines: major efforts; dashed lines: minor efforts.         4a: Children who have lost both parents, in high prevalence countries.         4b: Children both of whose parents are alive and who live with at least one parent, in high prevalence countries.         4c: Children who have lost both parents, in low prevalence countries.         4d: Children both of whose parents are alive and who live with at least one parent, in low prevalence countries.