Discuss the below:
Q: Explain meta-analysis to me in layman's terms. Then, read the article below and provide a summary of the article and identify how meta-analysis was used in the study.
Jefferson, T., Smith, S., Demicheli, V., Harnden, A., Rivetti, A., & Di Pietrantonj, C. (2005). Assessment of the efficacy and effectiveness of influenza vaccines in healthy children: systematic review. The lancet, 365(9461), 773-780.