laryngeal cleft
... that approximately 1 in every 10,000 to 20,000 babies are born with a laryngeal cleft, a gap between the oesophagus and trachea which allows food or fluid to pass into the airway?
... that approximately 1 in every 10,000 to 20,000 babies are born with a <b id="mwBik"><a href="./Laryngeal_cleft" id="mwBio" rel="mw:WikiLink" title="Laryngeal cleft">laryngeal cleft</a></b>, a gap between the <a class="mw-redirect" href="./Oesophagus" id="mwBis" rel="mw:WikiLink" title="Oesophagus">oesophagus</a> and <a class="mw-redirect" href="./Vertebrate_trachea" id="mwBiw" rel="mw:WikiLink" title="Vertebrate trachea">trachea</a> which allows food or fluid to pass into the airway?