Review Article

Comparative Efficacy of Chinese Herbal Injections for Treating Acute Exacerbation of Chronic Obstructive Pulmonary Disease: A Bayesian Network Meta-Analysis of Randomized Controlled Trials

Figure 1

Flow diagram of study search (n, number of articles; CNKI, China National Knowledge Infrastructure Database; WanFang, the Wan-Fang Database; VIP, the Chinese Scientific Journals Full-Text Database; CBM, the Chinese Biomedical Literature Database).