Practice guideline: idiopathic normal pressure hydrocephalus: response to shunting and predictors of response: report of the Guideline Development, Dissemination, and Implementation Subcommittee of the American Academy of Neurology - Halperin, J J; Kurlan, R; Schwalb, J M; Cusimano, M D; Gronseth, G; Gloss, D (Neurology, 2015)