2. Materials and Methods
2.1 Search methods
From July 2009 to February 2019, related studies were found by searching
the databases of EMBASE, PubMed, Web of Science, MEDLINE, and Cochrane
library database, meanwhile, we also consulted some Chinese periodicals,
such as China Academic Journals (CNKI), Wanfang and Weipu. The key words
are as follows: (a) Disorder: Non-small cell lung cancer and related
terms; (b) Intervention: traditional Chinese medicine, Chinese herbal
medicine and related terms; (c) Study type: randomized controlled trial
and related terms. The experimental and control groups included in this
analysis were the intervention and EGFR-TKIs groups, respectively. All
NSCLC cases were confirmed by histopathological examination. Two
independent reviewers independently searched the literature and
extracted the data.