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Lung function in preschool children
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  1. D Vilozni,
  2. O Efrati,
  3. A Barak
  1. Sheba Medical Center, Ramat Gan, Israel 52625; avi_vil@netvision.net.il

https://doi.org/10.1136/thorax.58.5.461-a

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    We read with great interest the recent paper by Nystad et al1 on the feasibility of spirometric tests in preschool children using candle blowing incentives, in support of recent publications.2–5 As there is a dearth of spirometric reference data for this age group, we value the additional regression equations derived. However, we have several questions concerning this study.

    The regression formulae presented were based …

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