Effect of physical work during pregnancy on birth weight.
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D001724:Birth Weight; D005260:Female; D006801:Humans; D007194:India; D007752:Obstetric Labor, Premature; D005082:Physical Exertion; D010920:Placenta / Q000098:blood supply; D011247:Pregnancy / Q000502:physiology*; D014931:Women, Working