title: Authors' reply.
authors.affiliation: Lars Vedel Kessing, Psychiatric Center Copenhagen, Department O and Faculty of Health and Medical Sciences, University of Copenhagen, Per Kragh Andersen, Department of Biostatistics, University of Copenhagen, Denmark. Email: Lars.Vedel.Kessing@regionh.dk.
authors.forename: Lars Vedel
authors.initials: LV
authors.lastname: Kessing
authors.affiliation: Lars Vedel Kessing, Psychiatric Center Copenhagen, Department O and Faculty of Health and Medical Sciences, University of Copenhagen, Per Kragh Andersen, Department of Biostatistics, University of Copenhagen, Denmark. Email: Lars.Vedel.Kessing@regionh.dk.
authors.forename: Per Kragh
authors.initials: PK
authors.lastname: Andersen
mesh_terms: D018692:Antimanic Agents / Q000627:therapeutic use*; D001714:Bipolar Disorder / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008094:Lithium / Q000627:therapeutic use*; D008297:Male
chemical_list: D018692:Antimanic Agents; D008094:Lithium