@book{90428,
	author = {RIGBY, A.S. and ROBINSON, M.B.},
	title = {STATISTICAL METHODS IN EPIDEMIOLOGY. IV. CONFOUNDING AND THE MATCHED PAIRS ODDS RATIO},
	url = {\\Srvdatos\siis\docus\Revistas electrónicas\Disability and Rehabilitation R.1364\2000\Statistical methods in epidemiology.pdf}
}