A.-B. Puentes-Gutiérrez, M. García-Bascones, M. Sánchez-Casado, L. Fernández-García, R. Puentes-Gutiérrez, and M.-A. Marquina-Valero, “Treatment of Post-Breast Surgery Pain Syndrome with Botulinum Toxin: Analysis of The Response to the Addition of Levobupivacaine and to the Type of Surgery”, Arch Breast Cancer, pp. 115–118, Apr. 2021.