@article {gu2005statmed,
	title = {The utility of prior information and stratification for parameter estimation with two screening tests but no gold standard},
	journal = {Statistics in Medicine},
	volume = {24},
	year = {2005},
	pages = {1203-1217},
	doi = {10.1002/sim.2002},
	author = {Gustafson, P.}
}
