RT Journal Article SR Electronic T1 Cracking the therapeutic nut in mild cognitive impairment JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1542 OP 1543 DO 10.1212/01.wnl.0000344652.73680.e6 VO 72 IS 18 A1 Knopman, David S. YR 2009 UL http://n.neurology.org/content/72/18/1542.abstract AB