000			007230000a22001930004500
001			5473
090			_a5473
100			_a20081217d k||y0pory50 ba
101			_aeng
102			_aUS
200			_aEnhancing causal inference in observational studies _fThomas B. Newman, Warren S. Browner, Stephen B. Hulley
300			_aCapítulo de monografia
463			_aed. lit. Stephen B. Hulley... [et al.] _cPhiladelphia _d2007 _e3rd ed _nLippincott Williams & Wilkins _pp. 127-146 _tDesigning clinical research _05461
606			_91830 _aInvestigação clínica
676			_a001.42 C557o _v3ª ed.
700			_922502 _aNewman _bThomas B.
701			_98722 _4070 _aBrowner _bWarren S.
701			_916518 _4070 _aHulley _bStephen B.
942			_cANA _n0