Moura, Rita Maria Aparecida Monteiro, Délcio Matos, Mário Mello Galvão Filho, Giuseppe D’Ippólito, Jacob Sjzenfeld, and Lídia Maria Giuliano. 2001. “Value of CEA Level Determination in Gallbladder Bile in the Diagnosis of Liver Metastases Secondary to Colorectal Adenocarcinoma”. São Paulo Medical Journal 119 (3):110-13. https://periodicosapm.emnuvens.com.br/spmj/article/view/2757.