@misc{indiciaed064805033a2, title = {Painful, red umbilicus.}, author = {L Shay Richardson and Jonathan I Singer and John J Buchino}, year = {2004}, doi = {10.1097/01.pec.0000136075.83316.6a}, url = {https://pubmed.ncbi.nlm.nih.gov/15295254/}, note = {Source identifier: 15295254} }