Variations in the gag, cough and swallow reflexes and tone of the vocal cords as determined by direct laryngoscopy in newborn infants.

Yale J Biol Med · 1952 · PMC2599160 · PMID 14913997

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may be significantno p-value reported

The absent or diminished cough reflex may be significant in permitting access of amniotic fluid to the lung prior to birth.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.