Oxman-Guyatt Overview Quality Assessment Questionnaire (OQAQ) [10] The OQAQ instrument was selected as the quality appraisal tool, which was designed to evaluate whether the authors of a systematic review conducted a comprehensive search, minimized bias in the selection of primary studies, evaluated the primary literature, and pooled the results appropriately. It consists of 10 questions, the first 9 questions are designed to assess different aspects of methodological quality and have set answers of ''yes'', ''partially/can't tell'', or ''no'', question 10 is an assessment of the overall scientific quality of the systematic review on a scale of 1 to 7, it is answered based on how well the review scored on the first 9 questions.