Explain What inclusion or exclusion criteria were used?

Order Description
I need to critique an article that is quantitative research. Needs to include:
What was the purpose of the study (research questions, purposes, and hypotheses)?
How was the sample obtained?
What inclusion or exclusion criteria were used?
Who from the sample actually participated or contributed data?
What methods were used to collect data (e.g. sequence of events, timing, types of data, and measures)?
Was an intervention /treatment/clinical protocol tested? Explain.
What were the main findings of this study?
Was this a credible study?

Appraisal Synopsis #1 (AS #1) Quantitative Research Article:
Stinson, J., Kohut, S.A., Forgeron, P., Amaria, K., Kaufman, M., Spiegel, L. (2016). The iPeer2Peer Program: a pilot randomized controlled trial in adolescents with Idiopathic Arthritis. Pediatric Rheumatology, 14(48). Doi: 10.1186/s12969-016-0108-2

This is the link to the above article that needs to be critiqued :
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5010693/

Also, This book may be used as a second source:
https://books.google.com/books?hl=en&lr=&id=9JDFsgYs3mwC&oi=fnd&pg=PR1&dq=Evidence-Based+Nursing:+The+Research-Practice+Connection+(Recommended)+Sarah+Jo+Brown&ots=wnlAxe9X31&sig=WvsAFcxqq1FU55r-KzTnx4SWp8k#v=onepage&q=Evidence-Based%20Nursing%3A%20The%20Research-Practice%20Connection%20(Recommended)%20Sarah%20Jo%20Brown&f=false
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