Impact of ultrasound-guided rhomboid intercostal and serratus anterior plane blocks on respiratory function after modified radical mastectomy: a randomized controlled trial. - Akgün, Gizem; Altıparmak, Başak; Pınarbaşı, Ahmet; Toker, Melike Korkmaz; Pektaş, Sinan; Uğur, Bakiye (Korean Journal of Anesthesiology, 2026)