Batista, M., Alves, F., Cardoso, J. and Gonçalo, M. 2020. Cutaneous Endometriosis: A Differential Diagnosis of Umbilical Nodule. Acta Médica Portuguesa. 33, 4 (Apr. 2020), 282–284. DOI:https://doi.org/10.20344/amp.10966.