000			00522nam a22001577a 4500
999			_c18450 _d18450
008			200810b xxu||||| |||| 00| 0 eng d
020			_a1608318044
050			_aR853 _b.D47 2013 c.1
245			_aDesigning Clinical Research _cEdited by Stephen B. Hulley, Steven R. Cummings, Warren S. Browner, Deborah G.Grady, & Thomas B. Newman
250			_a4th ed.
260			_aPhiladelphia _bWolters Kluwer _c2013
300			_axiii, 367p.
650			_aEpidemiologic methods
650			_aResearch design
942			_2lcc _cBK