Vitacca, M., L. Bianchi, A. Bazza, and E.M. Clini. “Advanced COPD Patients under Home Mechanical Ventilation and/Or Long Term Oxygen Therapy: Italian Healthcare Costs”. Monaldi Archives for Chest Disease 75, no. 4 (December 10, 2015). Accessed April 29, 2024. https://www.monaldi-archives.org/macd/article/view/208.