Response to: Comment on “Noninvasive Ventilation Weaning in Acute Hypercapnic Respiratory Failure due to COPD Exacerbation: A Real-Life Observational Study” - Paola Faverio; Anna Stainer; Federica De Giacomi; Grazia Messinesi; Valentina Paolini; Anna Monzani; Paolo Sioli; Irdi Memaj; Oriol Sibila; Paolo Mazzola; Alberto Pesci (Canadian Respiratory Journal)