Lithium plus valproate combination therapy versus monotherapy for relapse prevention in bipolar I disorder (BALANCE): a randomised open-label trial.
Lancet. 2010 Jan 30;375(9712):385-95. doi: 10.1016/S0140-6736(09)61828-6. Epub 2010 Jan 19.
Lancet. 2010.
PMID: 20092882
Clinical Trial.