Cite
HARVARD Citation
Meldrum, M. (1998). "A calculated risk": the Salk polio vaccine field trials of 1954. BMJ. 317 (7167), pp. 1233-1236. [Online].
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Meldrum, M. (1998). "A calculated risk": the Salk polio vaccine field trials of 1954. BMJ. 317 (7167), pp. 1233-1236. [Online].