The World Federation of Societies of Biological Psychiatry (WFSBP) Guidelines for the Biological Treatment of Bipolar Disorders. Part III: Maintenance treatment. - Grunze,H.; Kasper,S.; Goodwin,G.; Bowden,C.L.; Möller,H-J.; WFSBP,T.ask. (World J Biol Psychiatry, 2004)