The functional coding variant Asn107Ile of the neuropeptide S receptor gene (NPSR1) influences age at onset of obsessive-compulsive disorder. - Lennertz L; Franke PE; Grabe HJ; Rampacher F; Schulze-Rauschenbach S; Guttenthaler V; Ruhrmann S; Pukrop R; Klosterkötter J; Falkai P; Maier W; Wagner M; et al. (The international journal of neuropsychopharmacology, 2013)