Occupational cancer : problem in interpreting human evidence

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      <subfield code="a">The number of agents that are known to cause human cancer in an occupational setting is still relatively small. Several occupations are known to have been associated with a cancer hazard, without the specific agent having been detected and many other occupations have come under suspicion. This paper reports of the need for epidemiological evidence of cancer and the assessment of epidemiological evidence</subfield>
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