Variations in seasonal solar insolation are associated with a history of suicide attempts in bipolar I disorder. - Bauer, Michael; Glenn, Tasha; Achtyes, Eric D.; Alda, Martin; Agaoglu, Esen; Altınbaş, Kürşat; Andreassen, Ole A.; Angelopoulos, Elias; Ardau, Raffaella; Vares, Edgar Arrua; Aydin, Memduha; Ayhan, Yavuz; et al. (International Journal of Bipolar Disorders, 2021)