Article Text
Aetiology
Physical exertion at work during pregnancy did not increase risk of preterm delivery or fetal growth restriction
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Footnotes
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For correspondence: Dr L Pompeii, University of Texas School of Public Health, Houston, TX, USA. lisa.pompeii{at}uth.tmc.edu
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Sources of funding: March of Dimes Birth Defects Foundation; National Institute of Child Health and Human Development; Centers for Disease Control and Prevention; American Association of Occupational Health Nurses Foundation.