Biotype as determinant of natural immunising effect of cholera.
Clemens JD, van Loon F, Sack DA, Rao MR, Ahmed F, ChakrabortY J, Kay BA, Khan MR, Yunus MD, Harris JR, et al.
Clemens JD, et al. Among authors: rao mr.
Lancet. 1991 Apr 13;337(8746):883-4. doi: 10.1016/0140-6736(91)90207-6.
Lancet. 1991.
PMID: 1672971