@article{Manhart2002,
author = {Manhart, L.E. and Aral, S.O. and Holmes, K.K. and Foxman, B.},
title= {Sex partner concurrency: measurement, prevalence, and correlates among urban 18-39-year-olds},
year = {2002},
doi = {10.1097/00007435-200203000-00003},
journal = {Sexually Transmitted Diseases},
volume = {29},
number = {3},
pages = {133--143},
}