Szu, S., Z. Kossaczka, E. Konadu, A. Karpas, J. Shiloach, D. Bryla, F. Lin, J. Robbins, D. Trach, H. Khiem, V. Ho, and N. Thuy. “Phase II Trials of Conjugates of <em>S.typhi</em> Vi and of <em>S.paratyphi</Em&gt; A O-Speciftc Polysaccharide (O-SP) Conjugates in Dong Thap Province, Vietnam”. Medical Journal of Indonesia, Vol. 7, no. Supp1, Oct. 1998, p. 109, doi:10.13181/mji.v7iSupp1.1052.