@misc{indiciae02fda1775047, title = {Closing the surveillance gap.}, author = {W E Halperin and D L Ordin}, year = {1996}, doi = {10.1002/(sici)1097-0274(199602)29:2<223::aid-ajim14>3.0.co;2-5}, url = {https://pubmed.ncbi.nlm.nih.gov/8821367/}, note = {Source identifier: 8821367} }