A comprehensive search for guidelines was undertaken to identify the most relevant guidelines to consider for adaptation.

Inclusion/Exclusion criteria followed in the search and retrieval of guidelines to be adapted:

▶️  Selecting only evidence-based guidelines (guideline must include a report on systematic literature searches and explicit links between individual recommendations and their supporting evidence).

▶️  Selecting only national and/or international guidelines.

▶️  Specific range of dates for publication (using Guidelines published or updated 2015 and later).

▶️  Selecting peer reviewed publications only.

▶️  Selecting guidelines written in English language.

▶️  Excluding guidelines written by a single author not on behalf of an organization in order to be valid and comprehensive, a guideline ideally requires multidisciplinary input.

▶️  Excluding guidelines published without references as the panel needs to know whether a thorough literature review was conducted and whether current evidence was used in the preparation of the recommendations.

The following characteristics of the retrieved guidelines were summarized in a table:

▶️  Developing organization/authors

▶️  Date of publication, posting, and release

▶️  Country/language of publication

▶️  Date of posting and/or release

▶️  Dates of the search used by the source guideline developers.

Evidence assessment

According to WHO handbook for Guidelines we used the GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach to assess the quality of a body of evidence, develop and report recommendations. GRADE methods are used by WHO because these represent internationally agreed standards for making transparent recommendations. Detailed information on GRADE is available on the following sites:

▶️  GRADE working group: http://www.gradeworkingroup.org.

▶️  GRADE online training modules: http://cebgrade.mcmaster.ca/.

▶️  GRADE profile software: http://ims.cochrane.org/revman/gradepro

Table 1 Quality of evidence in GRADE

Table 2 Significance of the four levels of evidence

Table 3 Factors that determine How to upgrade or downgrade the quality of evidence