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2. Malaria i Danmark;Olsen;Ugeskr Laeg,1974
3. Malariaprofylakse for danske troperejsende;Fogh;Nord Med,1982
4. Cataract. the ultraviolet risk factor;Hollows;Lancet,1981
5. Cataract: sanitation or sunglasses?;Harding;Lancet,1982