3.4 Data sources and research strategy
The search strategies for this systematic review will be based on the
keywords (MeSH Terms) “Obesity. Endoscopy. Bariatric surgery. Gastric
Bypass. Stent”, with publications from 2010 to 2020, in order to
analyze the most recent scientific publications. The research will be
carried out in June 2020 and developed at SCOPUS (Elsevier and
non-Elsevier database), PUBMED (MEDLINE biomedical literature, life
science magazines, and online books) and SCIENCE DIRECT (Elsevier
database), including the National Institutes of Health RePORTER Grant
database and clinical trial records. In addition, a combination of the
keywords with the Booleans “OR”, AND and the operator “NOT” will be
used to target scientific articles of interest. The title and abstracts
will be examined under all conditions. The research structure used in
the databases is shown in Figure 1.
Figure 1. Example of the research structure in PubMed, the same
search strategy was used in the other databases.