The Effect of A Combination of Progressive Muscle Relaxation and Deep Breathing Techniques on Anxiety Levels in Preoperative Patients Under Spinal Anesthesia. Hippocratica : Journal of Modern Medicine and Healthcare Practice, [S. l.], v. 1, n. 2, p. 266–278, 2026. Disponível em: https://sovereignresearch.org/hippocratica/article/view/327. Acesso em: 28 sep. 2026.