THE EFFECT OF DEEP BREATHING RELAXATION EDUCATION USING LEAFLET MEDIA ON THE ANXIETY LEVEL OF PREOPERATIVE PLASTIC SURGERY PATIENTS AT ARIFIN ACHMAD HOSPITAL RIAU PROVINCE. Proceedings OPTIMAL, [S. l.], v. 1, n. 1, 2024. DOI: 10.5281/zenodo.15956313. Disponível em: https://proceedings.nuansafajarcemerlang.com/index.php/ico/article/view/55. Acesso em: 12 feb. 2026.