This article is maintained by: Elsevier
Article Title: Primary umbilical endometriosis: A painful swelling in the umbilicus concomitantly with menstruation
Journal Title: International Journal of Surgery Case Reports
CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.ijscr.2016.09.029
Content Type: article
Copyright: © 2016 The Author(s). Published by Elsevier Ltd on behalf of IJS Publishing Group Ltd.