Nipple-sparing mastectomy for early breast cancer: the importance of intraoperative evaluation of retroareolar margins and intra-nipple duct removal - Heinzen, Rebeca Neves; Barros, Alfredo Carlos Simões Dornellas de; Carvalho, Filomena Marino; Aguiar, Fernando Nalesso; Nimir, Cristiane da Costa Bandeira Abrahao; Jacomo, Alfredo Luiz (Gland surgery, 2020)