Acute Skin Toxicities After Ultrahypofractionated Versus Hypofractionated Postoperative Radiotherapy in Patients With Early Breast Cancer—A Single‐Institution Clinical Study. - Petkovska, Gordana; Ratosa, Ivica; Trajanovska, Valentina Bojovska; Iljovska, Marina; Lazareva, Emilija; Lazarevska, Antonija; Klisarovska, Violeta; Smichkoska, Snezhana; Ribeiro, Ivana (International Journal of Breast Cancer, 2026)