@article {pmid8441164,
	title = {Detecting treatment effects in patients with rheumatoid arthritis: the advantage of longitudinal data},
	journal = {J. Rheumatol.},
	volume = {20},
	number = {1},
	year = {1993},
	month = {Jan},
	pages = {40{\textendash}44},
	author = {Edworthy, S. M. and Bloch, D. A. and Brant, R. F. and Fries, J. F.}
}
