Development and validation of the BD SX: a brief measure of mood and symptom variability for use with adults with bipolar disorder
International Journal of Bipolar Disorders (2016) - Comment
pubmed: 26928123  doi: 10.1186/s40345-016-0048-2  issn: 2194-7511 

Norm O'Rourke, Andrew Sixsmith, David B. King, Hamed Yaghoubi-Shahir, Sarah L. Canham,