[1] Hlth Canada, 269 Laurier Ave West,4908D, Ottawa, ON K1A0K9, Canada
[2] Arctic Univ Norway, Dept Community Med UiT, Tromso, Norway
[3] Faroese Hosp Syst, Dept Occupat Med & Publ Hlth, Torshavn, Faroe Islands, Denmark
[4] Alaska Native Tribal Hlth Consortium, Anchorage, AK USA
[5] Aarhus Univ, Dept Publ Hlth, Aarhus, Denmark
[6] Aarhus Univ, Dept Publ Hlth, Ctr Arctic Hlth, Aarhus, Denmark
[7] Univ Greenland, Inst Nursing & Hlth Sci, Greenland Ctr Hlth Res, Nuuk, Greenland
[8] Northwest Publ Hlth Res Ctr, St Petersburg, Russia
[9] Inuit Circumpolar Council, Ottawa, ON, Canada
[10] Univ Iceland, Dept Pharmacol & Toxicol, Reykjavik, Iceland
[11] Univ Oulu, Fac Med, Arctic Hlth, Oulu, Finland
[12] Univ Oulu, Inst & Fac Med, Oulu, Finland
[13] Umea Univ, Dept Publ Hlth & Clin Med, Occupat & Environm Med, Umea, Sweden