R- and S-citalopram concentrations have differential effects on neuropsychiatric scores in elders with dementia and agitation. - Ho T; Pollock BG; Mulsant BH; Schantz O; Devanand DP; Mintzer JE; Porsteinsson AP; Schneider LS; Weintraub D; Yesavage J; Drye LT; Munro CA; et al. (British journal of clinical pharmacology, 2016)