@article {lbnwhys78, title = {Escherichia coli strains that cause diarrhoea but do not produce heat-labile or heat-stable enterotoxins and are non-invasive}, journal = {Lancet.}, volume = {1}, year = {1978}, pages = {8074}, author = {Levine, M M and Bergquist, E J and Nalin, D R and Waterman, D H and Hornick, R B and Young, C R and Sotman, S} }