000			00645nam a2200217 a 4500
001			A30009 1320
003			dti
005			20231006151559.0
008			s1992 000 0 eng
020			_a0192622870
041	0		_aeng
100	1		_aElwood, Mark J.
245	1	0	_aCausal relationship in medicine : _ba practical system for critical appraisal / _cby J. Mark Elwood.
260			_aOxford, Eng. U.K. : _bOxford University Press, _c1992.
300			_axi, 332 p.
440		0	_aOxford Medical Publications.
650		0	_aMedicine.
650		0	_aEpidemiology _xResearch _xMethodology.
650		0	_aCausation.
942			_2udc _cBK
999			_c362459 _d362459