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We investigate, from a more ecological point of view, a free boundary model considered in [11] and [8] that describes the spreading of a new or invasive species, with the free boundary representing the spreading front. We derive the free boundary condition by considering a " population loss " at the spreading front, and correct some mistakes regarding the(More)
OBJECTIVE To suggest a phonosurgical management strategy that can be used for children who have previously undergone laryngotracheal reconstruction. METHODS This cases series describes three children who presented with complex, multi-level airway stenosis and marked dysphonia. Phonosurgical intervention involved endoscopic and open approaches, and was(More)
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