Dal Negro, Roberto W., Luca Bonadiman, Fernanda P. Bricolo, Silvia Tognella, and Paola Turco. “Cognitive Dysfunction in Severe Chronic Obstructive Pulmonary Disease (COPD) With or Without Long-Term Oxygen Therapy (LTOT)”. Multidisciplinary Respiratory Medicine 10, no. 1 (April 19, 2015). Accessed June 30, 2025. https://mail.mrmjournal.org/index.php/mrm/article/view/291.