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- [33] Correlates of delayed sexual intercourse and condom use among adolescents in Uganda: a cross-sectional study BMC Public Health, 12
- [36] Correlates of delayed sexual intercourse and condom use among adolescents in Uganda: a cross-sectional study BMC PUBLIC HEALTH, 2012, 12
- [38] LONGITUDINAL VS CROSS-SECTIONAL APPROACHES IN STUDYING PROGNOSTIC FACTORS IN CORONARY HEART DISEASE JOURNAL OF CHRONIC DISEASES, 1966, 19 (08): : 935 - +