NavGeneral InfoEmail Print Geography Indonesia (IDN) Time period covered 01/1974 - 12/1974 Data type Scientific literature Keywords Micronutrients, Prevalence, Vision loss, Vitamin A deficiency Citation Authors Kusin JA, Sinaga HS, Marpaung AM Journal Trop Geogr Med Volume 29 Issue 1 Pages 41-6 Publication year 1977 Suggested citation Kusin JA, Sinaga HS, Marpaung AM. Xerophthalmia in North Sumatra. Trop Geogr Med. 1977; 29(1): 41-6. GHDx Entry last modified on: Feb 16, 2023