Pestana-Santos, Marcia, Maria João Pereira, Adriana Pestana-Santos, Eduardo Santos, Andreia Goncalves, Daniela Cardoso, Lurdes Lomba, and Margarida Santos. “Effectiveness of Non-Pharmacological Interventions to Manage Anxiety in Adolescents in the Perioperative Period: A Systematic Review and meta‑analysis”. Journal of Perioperative Nursing 34, no. 3 (July 30, 2021): 15–25, s1–s9. Accessed October 30, 2025. https://journal.acorn.org.au/index.php/jpn/article/view/185.