Genome-wide association study of more than 40,000 bipolar disorder cases provides new insights into the underlying biology. - Mullins N; Forstner AJ; O'Connell KS; Coombes B; Coleman JRI; Qiao Z; Als TD; Bigdeli TB; Børte S; Bryois J; Charney AW; Drange OK; et al. (Nature genetics, 2021)