Build a literature review matrix from these studies.

Studies:
{{studies}}

My research question: {{research_question}}

Return a table with columns:
- Author (year)
- Research question
- Method / sample
- Key finding (one sentence)
- Limitation
- How it relates to my research question

After the table:
1. The dominant finding across studies
2. Where the literature disagrees
3. The biggest gap that's still unaddressed
4. The two papers I should read most carefully and why