[1] Landspitali Univ Hosp, Mental Hlth Serv, Reykjavik, Iceland
[2] Iceland Heart Assoc, Kopavogur, Iceland
[3] Univ Iceland, Statistician Consulting Ctr, Sch Hlth Sci, Reykjavik, Iceland
[4] Univ Iceland, Chair Nursing Adm, Midwifery Sch Hlth Sci, Fac Nursing, Reykjavik, Iceland
[5] Landspitali Univ Hosp, Reykjavik, Iceland