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. 1963 Sep 21;2(5359):720-4.
doi: 10.1136/bmj.2.5359.720.

DECLINING TUBERCULIN SENSITIVITY WITH ADVANCING AGE

R N JOHNSTON, R T RITCHIE, I H MURRAY

DECLINING TUBERCULIN SENSITIVITY WITH ADVANCING AGE

R N JOHNSTON et al. Br Med J. .
No abstract available

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References

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