Al-Taee, Maha F., and Abdul Wahed B. Al-Shaibany. “In Vivo Study for Measuring the Toxicity of Heat Stable Enterotoxin (a) Produced by Enterotoxigenic Escherichia Coli in Mice”. Journal of Biotechnology Research Center, vol. 8, no. 3, Sept. 2014, pp. 4-11, doi:10.24126/jobrc.2014.8.3.345.