Irritability and elation in a large bipolar youth sample: relative symptom severity and clinical outcomes over 4 years.
Hunt JI, Case BG, Birmaher B, Stout RL, Dickstein DP, Yen S, Goldstein TR, Goldstein BI, Axelson DA, Hower H, Strober M, Ryan N, Swenson L, Topor DR, Gill MK, Weinstock LM, Keller MB.