Shift work, nitrous oxide exposure, and spontaneous abortion among Swedish midwives

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      <subfield code="a">The objective of this paper is to study the relation between irregular work hours, nitrous oxide exposure, and the risk of spontaneous abortion. The results support the hypothesis that night work and high work load increase the risk of spontaneous abortion</subfield>
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      <subfield code="g">Vol. 53, nº 6, June 1996 ; p. 374-378</subfield>
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