TASK2:Risk of bias (quality) assessment of 32 studies based on provided criteria. 1-Scanning 32 research studies to assess the following (table is already provided): Internal validity • Unrepresentative study group (selection bias) • Incomplete outcome assessment/follow up?

TASK1:Academic Writing 1-Editing 13,000 words for grammar, proofreading, and sentence structure. 2-Proper APA style referencing+within text citation. (References are provided) TASK2:Risk of bias (quality) assessment of 32 studies based on provided criteria. 1-Scanning 32 research studies to assess the following (table is already provided): Internal validity • Unrepresentative study group (selection bias) • Incomplete outcome assessment/follow up? (attrition bias) • Outcome assessors unblinded to investigated determinant (detection bias). • Important prognostic factors or follow up not taken adequately into account (confounding). External validity • Poorly defined study group (reporting bias) • Poorly defined follow up? (reporting bias). • Poorly defined outcome (reporting bias). • Poorly defined risk estimates (analyses). For every criterion, we will make a judgement using one of three response options. • High risk of bias. • Low risk of bias. • Unclear risk of bias