@misc{indiciaeaa63b8f8688e, title = {Introduction, epidemiology and classification.}, author = {Robert J Summerlee and Catherine F Decker}, doi = {10.1016/j.disamonth.2006.09.004}, url = {https://pubmed.ncbi.nlm.nih.gov/17157612/}, note = {Source identifier: 17157612} }