TY - JOUR A1 - Ware Jr., J.E. A1 - Kosinski, M. A1 - Keller, S.D. T1 - A 12-Item Short-Form Health Survey: Construction of scales and preliminary tests of reliability and validity Y1 - 1996 DO - 10.1097/00005650-199603000-00003 JF - Medical Care VL - 34 IS - 3 ER -