Age and adjustment to night work

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      <subfield code="a">The study was designed to examine the effects of age on sleep and the circadian rhythms during consecutive night shifts. In many questionnaire studies, ageing has been found to increase adverse health effects of shiftwork, the critical age being 40-50 years</subfield>
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      <subfield code="g">nº 8, August 1994 ; p. 568-573</subfield>
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