@article {pmid11572743,
	title = {Comparison of 2 methods for calculating adjusted survival curves from proportional hazards models},
	journal = {JAMA},
	volume = {286},
	number = {12},
	year = {2001},
	month = {Sep},
	pages = {1494{\textendash}1497},
	author = {Ghali, W. A. and Quan, H. and Brant, R. and van Melle, G. and Norris, C. M. and Faris, P. D. and Galbraith, P. D. and Knudtson, M. L.}
}
