Comparison of Immediate and Sequential Withdrawal of a Systemic Glucocorticoid in the Treatment of Acute Exacerbations of Chronic Obstructive Pulmonary Disease: A Multicenter, Rand... oleh Ling Zhou, Yuanyuan Fang, Wei Liu, Jianchu Zhang, Yingnan Wang, Sheng Xie, Minhua Zhong, Zhengyan Wang, Guangcai Li, Hongyan Ai, Hongrong Guo, Fanjun Zeng, Wei Xiao, Chenghong Li, Yi Hu, Yijun Tang, Huiguo Liu