Ghoroubi, J., L. Mohajerzadeh, S. Lotfollahzadeh, and K. Atqiaee. “Congenital Umbilical Appendix Misdiagnosed As Umbilical Granuloma: Report of 2 Cases”. APSP Journal of Case Reports, Vol. 9, no. 3, Sept. 2018, p. 17, doi:10.21699/ajcr.v9i3.45.