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. 2016 Apr 1;33(7):488–521. doi: 10.1097/EJA.0000000000000447

Table 4.

Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften wording schema to formulate recommendations based on the strength of the recommendation

Grade of recommendation Strength of recommendation Wording
A Strong recommendation ‘must’
B Recommendation ‘should’
0 Open recommendation ‘may’