“…Documenting the course of bipolar disorders requires reliable and clinically meaningful definitions of specific phases of illness, ideally based on operational criteria that facilitate comparisons across studies and support generalization of findings (Tohen et al, 1990a,b;1992a,b;Keller et al, 1993;Winokur ef a/., 1994;Keeker al, 1995;Strakowski etai, 2001;Chengappa et al, 2005;Conus et al, 2006;Harvey, 2006;Mclntyre et al, 2006;Shi et al, 2006). Bipolar disorders not only have high risks of multiple recurrences as well as sustained morbidity, but also very high rates of comorbidity with substance-use and anxiety disorders, variable disability, and premature mortality from extraordinarily high suicide rates as well as adverse outcomes of medical illness (Tsuang et al, 1980;Goodwin & Jamison, 1990;Tondo et al, 2003a;Fenn et al, 2005). To develop and implement sound and evidence-based clinical and public policies for treating bipolar disorder patients with scarce resources, much more information is required concerning their course and morbidity, ideally as early as possible to facilitate predictions.…”