title: [Not Available].
authors.forename: Georg
authors.initials: G
authors.lastname: Eckert
mesh_terms: D003363:Cost Control / Q000379:methods*; D003362:Cost-Benefit Analysis / Q000191:economics; D003906:Developing Countries / Q000191:economics*; D005139:Eyeglasses / Q000191:economics*; D017048:Health Care Costs; D005102:Health Expenditures; D009907:Optometry / Q000191:economics*