Dumas, R., Chassard, D., Tron, F., Salomon, H., Blondeau, C., Moreau, M. and Bouveret-Le Cam, N. (1998) “Present and future directions for a Vi polysaccharide vaccine in preventing Typhoid fever”, Medical Journal of Indonesia, 7(Supp1), pp. 110-2. doi: 10.13181/mji.v7iSupp1.1053.