Hatta, M., L. Chairudin L, and Henk L. Smits. 1998. “New Simple Method for Detection IgM Antibodies Against <em>Salmonella typhi</em&gt; Infection on Human”. Medical Journal of Indonesia 7 (Supp1), 208. https://doi.org/10.13181/mji.v7iSupp1.1110.