EDITORIAL Towards development of reliable criteria for at-risk states for bipolar disorders Michael Berk, Corresponding Author Michael Berk School of Medicine, Deakin University and Barwon Health, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Geelong, Victoria, Australia Correspondence Michael Berk, School of Medicine, Deakin University and Barwon Health, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Geelong, Vic, Australia.