การกวาดล้างโรคโปลีโอในทวีปอเมริกา
Abstract
References
Pan American Health Organization. Director announces campaign to eradicate poliomyelitis from the Americans by 1990. Bull Pan Am Health Organ 1985: 19: 213-5.
World Health Assembly. Global eradication of poliomyelitis by the year 2000. Geneva: World Health Organization, 1988. (Resolution WHA41.28).
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