“Adipose-Derived Stem Cells Therapy for Moderate Chronic Obstructive Pulmonary Disease in Adult Subjects: A Phase III Randomized, Multicenter Trial: RESPIRE Protocol”. Principles and Practice of Clinical Research 10, no. 1 (April 16, 2024). Accessed December 4, 2024. https://journal.ppcr.org/index.php/ppcrjournal/article/view/271.