@article {pmid11809357,
	title = {Multiple imputation versus data enhancement for dealing with missing data in observational health care outcome analyses},
	journal = {J Clin Epidemiol},
	volume = {55},
	number = {2},
	year = {2002},
	month = {Feb},
	pages = {184{\textendash}191},
	author = {Faris, P. D. and Ghali, W. A. and Brant, R. and Norris, C. M. and Galbraith, P. D. and Knudtson, M. L.}
}
