3.1 | The search results
Preliminary search of the database obtained a total of 1,244 pieces of
literature, after reading the literature and the title of a total of
1,186 pieces of literature screened out, the remaining 58 pieces of
literature, by reading the full text of the final inclusion of six
pieces of literature, including five pieces in English and one in
Chinese, a total of 531 patients, the specific literature included in
the flow chart is shown in Figure 1.