RT Journal A1 Marshall S T1 Dementia: A winter veil JF JAMA JO JAMA YR 2011 FD December 7 VO 306 IS 21 SP 2304 OP 2304 DO 10.1001/jama.2011.1689 UL http://dx.doi.org/10.1001/jama.2011.1689 AB