Challenges in the evaluation of HER2 and HER2-low in breast cancer in Brazil and recommendations of a multidisciplinary working group - Gobbi, Helenice; Soares, Fernando Augusto; Carvalho, Filomena Marino; De Brot, Marina; Logullo, Angela Flavia; Silva, Carlos Augusto Moreira; Landeiro, Luciana; Rahal, Rosemar; Barrios, Carlos Henrique (Revista da Associação Médica Brasileira, 2024)