Second breast-conserving therapy with interstitial brachytherapy (APBI) as a salvage treatment in ipsilateral breast tumor recurrence: a retrospective study of 40 patients - Cozzi, Salvatore; Jamal, Dina Najjari; Slocker, Andrea; Laplana, Maria; Garcia Tejedor, Amparo; Krengli, Marco; Guedea, Ferran; Gutierrez, Cristina (Journal of Contemporary Brachytherapy, 2019)