@misc{indiciae07d75a4e0110, title = {Letter: Cholera.}, author = {W H Barker and E J Gangarosa}, year = {1973}, doi = {10.1016/s0140-6736(73)91007-6}, url = {https://pubmed.ncbi.nlm.nih.gov/4128592/}, note = {Source identifier: 4128592} }