[1] Norwegian Univ Sci & Technol, NTNU, Dept Hlth Sci Gjovik, Trondheim, Norway
[2] Lovisenberg Diaconal Univ Coll, Oslo, Norway
[3] Univ Orebro, Sch Hlth & Med, Orebro, Sweden
[4] Univ Coll Southeast Norway, Ctr Womens Family & Child Hlth, Fac Hlth Sci, Notodden, Norway
[5] Univ Iceland, Fac Nursing, Reykjavik, Iceland
[6] Univ Groningen, Univ Med Ctr Groningen, Groningen, Netherlands
[7] London South Bank Univ, London, England
[8] Univ Coll Southeast Norway, Notodden, Norway
[9] Abo Akad Univ, Turku, Finland