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Arctic medicine. Tropical medicine
2
Cataract extraction
Extracción de catarata
2
Medicine
2
Public aspects of medicine
2
R
2
RA1-1270
2
RC955-962
2
eye health services
2
servicios de salud ocular
2
Brasil
1
Brazil
1
Peru
1
Perú
1
Sistema Único de Salud
1
Unified Health System
1
agudeza visual
1
blindness
1
cataract
1
catarata
1
ceguera
1
visual acuity
1
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