Leader: Mudrīte Daugaviete Start date: 2009-01-01 End date: 2009-12-31 Study supported by the Latvian Council of Science Project staff Endijs Bāders Arta Bārdule Andis Bārdulis Mudrīte Daugaviete Dagnija Lazdiņa Andis Lazdiņš Kaspars Liepiņš