• Toombak Use and Cigarette Smoking in the Sudan: Estimates of Prevalence in the Nile State 

      Idris, Ali M.; Ibrahim, Y. E.; Warnakulasuriya, K. A. A. Saman; Cooper, D. J.; Johnson, N. W.; Nilsen, Rune (Peer reviewed; Journal article, 1998-07)
      Background. Survey data on the prevalence of use of oral snuff (toombak) and cigarette consumption according to various demographic factors are needed in the Sudan. Methods. A house to house cross-sectional survey of a ...