@article {GuKa2005statmed,
	title = {Extending logistic regression to model diffuse interactions},
	journal = {Statistics in Medicine},
	volume = {24},
	year = {2005},
	pages = {2089-2104},
	doi = {10.1002/sim.2093},
	author = {Gustafson, P. and Kazi, A. M. R. and Levy, A. R.}
}
