Sarasombath, S., S. Korbsrisate, N. Banchuin, A. Thanomsakyuth, T. Sukosol, and P. Ekpo. “Serological Approaches of Typhoid Fever”. Medical Journal of Indonesia, Vol. 7, no. Supp1, Oct. 1998, pp. 54-8, doi:10.13181/mji.v7iSupp1.1034.