1. In pediatric patients aged 2months to 5 years who receive the MMR vaccination, is there an increased risk of autism against those who do not receive the vaccination?

P= Children aged 2months to 5years.

I= MMR vaccination

C= No MMR vaccination

O= Autism

Find 2 research studies that apply to this clinical research question. Provide the citations for the two studies utilizing current APA guidelines. Attach the two studies to your response.