title: A journey back in time.
authors.forename: William L
authors.initials: WL
authors.lastname: Glenn
mesh_terms: D001838:Bolivia; D003729:Dental Care / Q000191:economics / Q000458:organization & administration; D003906:Developing Countries; D006801:Humans; D008493:Medical Missions; D033303:Protestantism; D014838:Volunteers