Tiao-Bu-Fei-Shen Formula Improves Glucocorticoid Resistance of Chronic Obstructive Pulmonary Disease via Downregulating the PI3K-Akt Signaling Pathway and Promoting GRα Expression. - Zhou P; Ma J; Yu W; Chen K; Zhang W; Zhou J (Evidence-based complementary and alternative medicine : eCAM, 2023)