Summarize the current evidence on [CLINICAL QUESTION/TREATMENT]. Provide: 1) Key findings from major RCTs and meta-analyses, 2) Current clinical guideline recommendations (specify which organization), 3) Quality of evidence rating for key claims (high/moderate/low/very low), 4) Notable areas of clinical controversy or ongoing research, 5) Practical implications for clinical practice, 6) Limitations of the evidence base, 7) Questions this literature doesn't answer. Format as an evidence summary a clinician could reference quickly. Flag anything where evidence has shifted significantly in the pa...