Genome-wide association analyses of sleep disturbance traits identify new loci and highlight shared genetics with neuropsychiatric and metabolic traits by Lane, J, Liang, J, Vlasac, I, Anderson, S, Bechtold, D, Bowden, J, Emsely, R, Gill, S, Little, M, Luik, A, Loudon, A, Scheer, F, Purcell, S, Kyle, S, Lawlor, D, Zhu, X, Redline, S, Ray, D, Rutter, M, Saxena, R