Prevalence and correlates of bipolar disorder in the adult population of Hebei province, China. - Zhang, Yun-Shu; Rao, Wen-Wang; Zeng, Liang-Nan; Lok, Grace K I; Cui, Li-Jun; Li, Jian-Feng; Li, Lin; Ungvari, Gabor S; Hall, Brian J; Li, Ke-Qing; Xiang, Yu-Tao (Journal of Affective Disorders, 2020)