[1] Univ Oslo, Dept Nutr, Inst Basic Med Sci, Fac Med, Oslo, Norway
[2] Oslo Univ Hosp, Unit Cardiac & Cardiovasc Genet, Oslo, Norway
[3] Akershus Univ Hosp, Hlth Serv Res Unit, Lorenskog, Norway
[4] Univ Oslo, Dept Hlth Management & Hlth Econ, Oslo, Norway
[5] Univ Bergen, Dept Global Publ Hlth & Primary Care, Bergen, Norway
[6] Univ Oslo, Inst Basic Med Sci, Dept Nutr, Fac Med, Oslo, Norway