Guidelines characteristics
A total of 367 kinds of literature were searched from databases and
guideline websites including six Chinese version guidelines. After
duplicate checking, 312 literatures were screened and nineteen
guidelines were finally included. PRISMA flow diagram was shown in
Figure 1. Of the included guidelines, seventeen were in English and two
were in Chinese. Thirteen were CPGs and six were expert consensus-based
guidelines, all of which were intended for children. The basic
characteristics of the included guidelines are shown in Table
1.21-40