The Influence of the helmet respirator on peak flow rate in aluminium potroom

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      <subfield code="a">The efficiency of the Racal Airstream helmet respirator in improving peak expiratory flow rates (PEFR) and symptoms (dyspnea, wheezing, and cough) in aluminium potroom workers with respiratory complaints was assessed in 19 workers. The present study investigated the short-term effect of the helmet on peak flow measurements as compared with 3M 9906 disposable mask</subfield>
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      <subfield code="g">Vol. 52, nº 6, June 1991 ; p. 243-248</subfield>
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