Successful case report of congenital long-segment complex tracheal stenosis treated with sliding tracheoplasty associated with pulmonary artery vascular ring oleh Enrique R. Leal Cirerol, Jose Mora Fol, Carlos Max Luna Valdez, David Arellano Osta, Jorge Fonseca Nájera, Jesús Monroy Ubaldo, María Magdalena Ramírez González, Valery Selene Valadez Guerrero, Sofia Brenes Guzmán